Big block Camaro for sure.
I had the chance to buy a 1969 Z-28 with the 302 and a 4-speed that Chevy put in them for IMSA racing. It was gray and a really nice car. But back then hotrods were everywhere though, and I already had my 1970 AMC AMX that would run circles around that Camaro. Also had my 1967 Chevelle Malibu with a Vette engine it and my 1970 Cadillac Coupe DeVille. But, hind sight is 20-20. Sure wish I'd have bought that Camaro now. It would be worth a small fortune. More than my AMX, which is the one car I owned that I REALLY kick myself for selling. Had the 340hp 390ci in it, conservatively rated for insurance, the 4-speed with the Hurst spring loaded comp shifter and a posi, the "GO PACK." Thing ran like a scalded dog. But my 2017 2SS Camaro would have sucked the headlights out of it. Newer hotrods are just faster, handle better, stop better, the works.
This is why I'll never sell my collector 2006 FXD35 35th Anniversary Harley Davidson Dyna Super Glide. They only made 3,500 of them and they're all numbered. Someday that bike is going to be realized for the RARE collector it is, and how FEW of them were ever made. Probably one of the LOWEST production number Harleys ever made. Harley doesn't even make the Dyna anymore either, making it even more rare. Only has a little over 7,000 miles on it, and I'm not looking to put a whole lot more on it either. The lower the miles, the more it's worth. Cherry bike, one owner, and the owner is a retired Master Harley Davidson Tech. I do ride it though, have to. Have to get the oil pumping through the engine every once and awhile.