Only thing original in the drivetrain in the TH350 transmission. The motor started as a 1980 Targer Master engine. It is completely rebuilt with forged pistons. I put 1492 64cc heads on it, a small crane cam, 1972 Z28 intake, carb, air cleaner and valve covers. The cam is just a little bigger than a stock cam so it idles like stock. Other things not correct for a 72 are the short spoiler and the Z28 wheels and tires. I bought a rear end at a swap meet that was supposed to be a 3.42 posi out of a SS that turned out to be a 3.23 posi out of a Pontiac, I believe. Just about everything else is correct for a 72 SS. Even the cloth upholstery. Paid a bunch for that. The color is GM 1990-91 Dark Saphire Blue Metalic. The exhaust is complete NOS system. I spent 3 years restoring it from 1989-1991 so it is a pretty old restoration, but have only put about 500 miles on it since. You could still buy a lot of parts for them at the Chevy Dealer back then too. I've just lost interest in it so it mainly just sits and collects dust. I was thinking it might bring somewhere around 20K. I also have a 71 SS 350 4 spd with A/C car that is not too picture worthy and needs to be restored. It is a complete 100% original 70K mile car with the exception of it has a CE warranty replacement block that was installed when the car was just a few months old back in 1971. I have the original window sticker, build sheet, and brochure with the original selling Chevy Dealer's stamp on it. I bought about $5000 worth of NOS parts to restore it back in the early 90s that are in my attic just waiting for me to get motivated to do it. It was a good running car until the clutch PP broke in 1996 and it's been parked ever since.