Evlevo

I like it. Nice that the Datsun center piece fit too.

The car in the last picture is forsale in Alberta, Canada right now. May be worth contacting the seller see what he knows? Theres a link in the ad with more pictures too. http://www.kijiji.ca/v-classic-cars/calgary/1973-datsun-240z-widebody/1136615972?enableSearchNavigationFlag=true

I posted this a while ago in one of the seat threads. Could be even more motivation for you! I bought wrx seats for a smoking deal without even measuring them and heres how they sit in a 70 240z and the seats are from a 2011 wrx. No finished pics sorry this is just the seat sitting in the car.

If you are interested in quick, easy and cheap and don't mind a bit of DIY, look into flocking equipment. Ive done a few and i love how they turn out.

I think its a good start. The red paint ruins it completely. The designer went all that way and then skipped on one of the most important steps. It makes the Z look like it has a trashed sunfire interior.

Useful edit of my double post. I went outside and took some measurement and fitment pics. I had a stock seat, a leather S Chassis Seat (s14) and my wrx seats. Both will require custom mounting of course but dimension wise they both fit in the car. I also realized after i took the pictures i was jamming the passenger seats into the drivers side. I sat in the wrx seat while it was in my 240z (the higher of the 2) and there was still plenty of headroom. Im 5ft10. WRX Rail Width: 18 3/4 S14 Rail width: 18.5 All 3 for comparison

What Generation were you considering? I have a set of 2010 WRX seats (same design different fabric as the sti) I picked up for cheap from the junk yard, Dimensionally they re almost the exact same as a stock seat. Slightly smaller actually, Just a matter of making mounts. Heres a pic of mine. Ill post results when i get them in.

Id recommend using a MIG as well. TIG is unnecessarily complicated for welding on cars, while i'm not familiar with it as much as i am MIG i can assure you MIG is the way to go. Im not sure how thick the fire wall is on an s30, but id bet its thinner than 16g. You could use it, just make sure you dont focus too much on the old metal and warp it / miss actually joining the pieces by not heating the new metal enough.