Anyone want to talk Chevy! LOL
I had a 70 Camaro with a 307. Ran good, smooth, but pretty gutless. 3.25 stoke 3.76 bore if I remember right. Far less bottom end then any teener I've driven. Not sure I'd sink money into it or spend time on the heads, or cam it. It doesn't take long to get to the cost of an GM L31( the 1/2 ton version) drop in crate engine piecing and patching. That and an LT4 cam, easy 370ish. With GM it's hard to beat the bang for the buck you can still get from the dealer support.