Ok, so....

Where are some 5 1/4 inch speakers with a slim back and the mounting brackets for the speakers that go in the rear end of the 240z. I am going to see if I can start on my sound project so that I can at least listen to the radio with 2 speakers.

I can't find the speakers with slim backs, and I can not find the bracket.

I do not care about the wattage really. Just some nice quality.

Radio Shack. From cheap to expensive, depends on what you are looking for and the quality of the radio you hook up to it.

For the original radio I used a plain 5-1/4" Round, about 20-30 watts (lowest I could find). Cost about $20 for the pair.

You could step up to a coaxial, or even a tri-axial, again in various watt brackets, but if you're using the OEM radio, don't waste your money.

Don't forget the OEM is MONO and you'll have to connect the two speakers to the same pair of wires. On a higher end radio it makes a difference if in Series or Parallel, but the OEM is very plain and low powered. As such, since it's power output is so low (3.5 watts), and it expects a 4Ω speaker, connect the two you buy in parallel. This will reduce the resistance and allow for a bit more sound out of the pair.

Brackets are simple, if you have a Left speaker (standard with a radio) then the Right speaker bracket is simply the mirror image. You can however, manufacture your own and as long as you're not rubbing the vent hoses or the back of the plastic surround, you should be fine.

FWIW

E

Or, if you're not handy, you could try these that are shown on Les' Classic Datsun Motorsports site. I don't know how much they cost, but would be interested in knowing. They look good to me.

http://classicdatsun.com/new/240_misc-parts.html

After you get or make the brackets..... Pioneer and Kenwood both make "Slim Line" speakers for shallow areas like the rear of the 240Z.

I have the Pioneers because I liked the sound of them better, when listening to the demos at the local stereo shop.

I personally made a reverse replica of the drivers side out of 1/8" ABS plastic. The plate does'nt need to be heavy duty or anything like that because the speaker is light weight and won't be jolted or slammed like a door speaker would. I also used a butter lid on the back of the right speaker to reduce the chance of sharp edges rubbing the hoses. Just in case.

I think I paid about $40 after tax for my 5 1/4 Pioneers.

Dave