hello I am pleased to be a part of this forum, I just wanted to tell all why I luckly found this forum because there is a lot of other ones but none like this,full of information if you wanna do what I thought was going to be easy;Ha ha; Well to the point I have 1971 c20 and wanted to make a nice tour/tower but ran into a snag on how to tune the free motor and tranny mate from a 1997 chevy Silverado:motor is a l31 350 5.7 pcm is stupid but works.Anyway see in your forum thanks, amargosajoe