It’s a full system, so part numbers include the header.

I found three:

15413

15415

15418

Edited September 18, 20222 yr by Matthew Abate

15 hours ago, Matthew Abate said:

It’s a full system, so part numbers include the header.

I found two:

15-413

15-415

Hi, I really can't see them being different apart from the diff section.  `performance is quoted as exactly the same, it'd make no sense as its only that section that needs changing or that has changed...

41 minutes ago, Jason240z said:

Hi, I really can't see them being different apart from the diff section.  `performance is quoted as exactly the same, it'd make no sense as its only that section that needs changing or that has changed...

So please be the guinea-pig and buy it :-)

1 hour ago, Sean Dezart said:

So please be the guinea-pig and buy it 🙂

I couldn't possibly imagine why you'd be asking so many questions about Fujitsubo's Legalis systems, or be so exercised about finding out as much as possible about them.

Have you ever considered making and selling your own exhaust systems? 

1 hour ago, Sean Dezart said:

So please be the guinea-pig and buy it 🙂

I will.

 

Please stick to your own threads without destroying the whole internet.

51 minutes ago, HS30-H said:

I couldn't possibly imagine why you'd be asking so many questions about Fujitsubo's Legalis systems, or be so exercised about finding out as much as possible about them.

Have you ever considered making and selling your own exhaust systems? 

Then sir, you lack any imagination. :-)

39 minutes ago, Jason240z said:

I will.

Please stick to your own threads without destroying the whole internet.

Drink your own medicine ; you and the Count follow me around everywhere !

However, in a free world, anyone can post when and where he (or she) likes - no ?

20 hours ago, Sean Dezart said:

Drink your own medicine ; you and the Count follow me around everywhere !

However, in a free world, anyone can post when and where he (or she) likes - no ?

its all in your head.  you post on my threads.  

Why don't we start threads on your exhausts speaking about the following issues with Zstory:

 Lead times, taking money upfront and not delivering for months, having a whole range of reasons why things are delayed, fitting and quality issues, problems with having everything made in China and not having a close enough control of manufacturing, lack of technical information, lack of technical drawings, lack of Dyno development, lack of actual knowledge.

 

 

Edited September 19, 20222 yr by Jason240z

21 minutes ago, Sean Dezart said:

...you and the Count follow me around everywhere !

Mostly in your head. Rent free.

This is the information Fujitsubo has listed on their product description for the EPU system:

Product Name - EXH PERFORMANCE UNIT (Legalis)
Item Number - 050-15413
Price Price - ¥313,500 (Base price: ¥285,000)
JAN Code - 4944997019149
Supported model application - S30 Fairlady Z 2 Seater
Body Type - S30 (2 Seater only, Manual Transmission vehicles only)
Engine type - L20
Year - 1969.11 - 1975.9

Special Notes:

• Compatible with low-down [lowered] vehicles
• It is a set of EX manifold + muffler (4 divisions).
• It is not compatible with genuine and other exhaust parts.
• Common to Solex, Weber Cab, and SU Cab
• Genuine SU cab car * Heat shielding required
• It cannot be installed in a car equipped with a genuine air cleaner box.

Specifications:

• Outlet shape Tailip Style - φ50.8 slash (W, vertical)
• Pipe Diameter Pipe Diamet er - EX: φ45.0-50.8, Muffler: φ50.8 Dual

List of Fitting Parts

• 080-35098 Plate Gasket Plate Gasket x 3
• M8 x 35mm Bolt x 9
• 12 M8 spring washers
• M8 Nut x 12
• M8 x 25mm Bolt x 3
• M8 plate washer (small) x 9
• S30 exclusive metal fittings (band type φ50.8) x 3
• Dedicated bracket for S30 [A] x 1
• Dedicated bracket for S30 [B] x 1
• Dedicated bracket for S30 [C] x 1
• Insulation mat (80 x 100) x 1
• Stainless steel wire (l250) x 2

Product Name - EXH PERFORMANCE UNIT (Legalis)
Item Number - 050-15415
Price Price - ¥313,500 (Base price: ¥285,000)
JAN Code - 4944997019156
Supported model application - S30 Fairlady Z 2 Seater
Body Type - S30 (2 Seater only, Manual Transmission vehicles only)
Engine type - L20
Year - 1969.11 - 1975.9

Special Notes:

• Compatible with low-down [lowered] vehicles
• It is a set of EX manifold + muffler (4 divisions).
• It is not compatible with genuine and other exhaust parts.
• Common to Solex, Weber Cab, and SU Cab
• Genuine SU cab car * Heat shielding required
• It cannot be installed in a car equipped with a genuine air cleaner box.

Specifications:

• Model Type - R200 Diff compatible model
• Outlet Shape Tailip Style - φ50.8 slash (W, vertical)
• Pipe Diameter Pipe Diameter EX: φ45.0-50.8, Muffler: φ50.8 Dual

List of Fitting Parts

• 080-35098 Plate Gasket Plate Gasket x 3
• M8 x 35mm Bolt x 9
• 12 M8 spring washers
• M8 Nut x 12
• M8 x 25mm Bolt x 3
• M8 plate washer (small) x 9
• S30 exclusive metal fittings (band type φ50.8) x 3
• Dedicated bracket for S30 [A] x 1
• Dedicated bracket for S30 [B] x 1
• Dedicated bracket for S30 [C] x 1
• Insulation mat (80 x 100) x 1
• Stainless steel wire (l250) x 2

---

This is what I found on JDM Car Parts:

Part number: #15-510-15418
Fujitsubo EPU Stainless Steel Dual Exhaust System for Datsun 240Z / Nissan Fairlady Z S30 L6 Engine
L6 L20-L28 Engine
Headers: 6-2 Type / 45mm at 6 and 50.8mm at 2
Exhaust pipe:  45 mm to 50.8 mm 50.8 mm at Straight section
This system is for triple carburetor set up 
Designed to work with lowered suspension set up. 
Works with RHD / LHD car
Works with R200 Differential set up
Comes with insert for O2 Sensor set up (O2 sensor is not included)
Caution: It does not come with manifold gasket (Stock manifold gasket works with this headers) 
Caution: Exhaust hangers are Not included. You need to use stock hangers

---

This is what I found on RHD:

Fairlady Z S30 GS30 HS30 2-Seater
Part Num: 050-15415
Series: Exh Performance Unit EPU Legalis
Material: Stainless Steel (SUS304)
Tip Type: Slash (W Vertical)
Tip Diameter (mm): 50.8 X 2
Pipe Diameter (mm): 50.8

---

This is what I found on Blackhawk Japan:

Series Name: EXH PERFORMANCE UNIT (LEGALIS)
Product Number - 050-15415
Compatible Car - FAIRLADY Z 2-SEATER S30

Product Description    

• Body model: -S30 
• Engine model: L20 
• Year: S44.11 to S50.9 (1969.11 to 1975.9) 
• Tailtip Style: φ50.8 Slash (W, vertical) 
• Pipe Diameter : EX: φ45.0-50.8, Muffler: φ50.8 Dual

Fitting Parts:

• 080-35098 Plate Gasket × 3 
• M8 × 35mm Bolt × 9 
• M8 Spring Washer × 12 
• M8 nut x 12 
• M8 x 25mm bolt x 3 
• M8 plate washer (small) x 9 
• S30 dedicated metal fitting (band type φ50.8) x 3 
• S30 dedicated bracket [A] x 1 
• S30 dedicated bracket [B] x 1 
• S30 dedicated bracket [C] x 1 
• Insulation mat (80 x 100) x 1 
• Stainless steel Wire (l250) x 2

Peak Power: Standard (STD): -dB FUJITSUBO: 95dB 
Peak Torque: Standard (STD): -dB FUJITSUBO: 92dB 
Proximity Exhaust Noise: Standard (STD): -dB FUJITSUBO: 89dB

Remarks    

• Safety standard compliant product 
• 2-seater only
• MT car only
• Low-down car compatible
• R200 differential compatible
• EX manifold + muffler (4 divisions) set product
• Not compatible with genuine and other exhaust parts
• Common to Solex, Weber cab, and SU cab vehicles
• Genuine SU cab vehicles
• Heat shield shield required
• Vehicles with genuine air cleaner box cannot be installed

Notes: Images are for illustration purpose only. Actual product may vary.

---

So it looks like 15413 is for an r180 differential and 15415 is for an r200 differential, but the information is so inconsistent from one retailer to another that I am not sure about any of it. I don't know if 15418 is a typo or what. I see exhaust hangers in the illustration and think that's what the brackets in the parts inventories are, but who knows.

Another thing I am finding is HUGE swings in price, from $1,404.46 to $3,299.00, and that is just within the EPU versions.

I reached out to JDM Car Parts but he hasn't responded yet. I have also reached out to Fujitsubo and Greenline Motorsports. Maybe one of them will respond.

Edited September 18, 20222 yr by Matthew Abate

I'll email the UK importer and see if they can help.  I'll also try fujitsubo.  I'll place a sportsman's bet on it just being the section before the silencer that varies.  I do wonder why they didn't do it that way initially.

I think you’re right. I would rather have the split one (15415) so the pipes tuck up better, but I don’t want to order it and find out it doesn’t line up with the twin pipe indentations on the r180 crossmember.