Thanks for the info guys. I have come across a 4-bolt 350 block from an 86 or so truck. I have lots of v8 parts so I think maybe I might go with the 350. I also have a T-5 tranny from an 84 v6 firebird, does anyone know how well this T-5 will hold up behind a v8? I really want the 5-speed, I'm just not sure what I can put in front of it with out tearing it up. Thanks again for the other info and any you can give me on this new one!!