I replaced the engine in my Cutlass Supreme 1983 (V6) with an engine from a Chevy 1500 series V8 305 from 1988. I had to drill some new engine mount holes and get rid of the truck 4 speed transmission. I ended up buying a used 350 transmission. Everything works like a charm. BTW, the engine from the truck was fuel injected and I converted it to carburetor.