I have a '02 GMC 2500 powered by LB7/Allison and a '65 Sport Fury I'm doin' a Gen3 hemi swap on. I do LS swaps and build stand alone harnesses. The latest is a '84 El Camino w/ '03 5.3/4L60E, long tube headers and exh that dumps out thru the panel just before rear tires. runs great!