I have used Street and Performance folks myself. They are very helpful. Go with them and you will not be sorry. AND GO WITH THE FI set up. Not many rodders now a days are tackling
FI, so if yours is FI
, it will be a stand out. mine is '62 383 w/ FI tpi.
that is one of the reasons I want to go with the LS1, not many out there in a old truck. I just think it would be cool to have a modern drivetrain in a old truck