DoubleYOOHZ

@rcb280z - Thanks for the reply. I did more searching and it is believed that the 77 280z have o2 sensors located elsewhere than the exhaust lining.

@cbuczesk- If i went with the 15x8, wouldnt the wheel need to be a negative offset to fit my situation? The rims I am running are factory 6 spoke rims for the 77 year. Tires on the side wall list as P205/70R14. I really had no intentions of getting flares but if i Have to i do not mind. When you said rubbing, I am assuming when the front wheels is positioned as wide as possible rubbing with the fenders?

Hello Z enthusiasts, I have a question regarding purchasing and welding on a catalytic converter. My car is a 1977 Datsun 280z and sadly, the 30 year no smog program does not apply in California. Car is sitting Non-op and running beautifully (with some issues on the alternator not charging the battery). From the looks of it, from the exhaust manifold runs a straight pipe into the exhaust. This is a modified exhaust (i believe magna flow). To get my car smog ready (because I want to daily this car), would it be a simple fix of just cutting the straight pipe and welding on a catalytic converter? Do I have to worry about 02 sensors?

@Zed Head - Being that my front wheel is offset, this would be a negative offset-correct? What do you mean by normal offset? I was planning on doing a 15x8 or 15x9 set of rims. Would that work? The link you provided was the photo I was about to upload for you guys because it almost looks identical to mines. @Patcon- The brakes look identical, if not the same, from the ones provided in the link by Zed Head. The rims I am running are factory 6 spoke rims for the 77 year. Tires on the side wall list as P205/70R14. @beermanpete-WIth the factory wheel mounting flange, wouldnt it block certain rim/wheels? (The pointy end of the 16 mm spacer?) With all this, using an offset wheel or not, are there any concerns for the lug nuts? I mean, my lug nuts rotate in maybe ~1 inch? Thanks all for the replys.

Hi! Longer time lurker finally digging out! I really enjoyed this forum's community through the years. I learned a lot even though I could not contribute much back. I am really curious about getting a new set of rims. This led me to remove my front wheel and learn what this car has to offer. The previous owner resold the car and did not do any type of modifications, so right off the bat he did not know much about the car. Removing the front left wheel, I noticed a spacer. I measured it to be 8mm (if my math is correct). After removing this plate, I noticed "another spacer"????This spacer seems to be at 16mm. At first, I was like "wut da coochy"??? Then I figure all those spacers (roughly 16 mm) need to accommodate this huge lard - brake calipers . I mean, it is huge! It looks like a turtle shell...I thought-what if i removed the 8mm spacer, would the wheel fit and be okay? Turns out that it would not fit because the brake caliper would rubber vigorously with rims. With this in mind, I asked myself if my rear wheels had spacers... Turned out that my rear wheels did not. So really, how is it that my front wheels have 24 mm off set and not stick out from the stock fenders? My rear tires are completely flush with the back fenders. My other question is the limited choices of rims I have. What kind of rims would help me in this situation being that my front end is an offset while my rear isnt?