65-74 Chevrolet mid SS and large body/big engine cars. 68-72 NovaSS 67-70 Camaro large engine, Some performance 68-74 Pontiac GTO, Olds 442, Buick GS. but rare.
Truck/van 12-bolt is not the same.
Doubt if you find one. I know the yards here have no early cars because of scrap prices.