dne007, Hello and Welcome to the Stovebolt Page. You'll find a LOT of answers and suggestions here even if some of them aren't the ones you necessarily want.
If your determined to install a SBC in your TF then give a look to the factory crate motors as they have something there for everyones price and requirements. Most have a factory warranty from GM that is hard for the local guy to compete with. Being the StoveBolt Page we are naturally predjudiced towards inline 6's but it is your truck and we support doing it your way.
Stop by often.
