Items marked by the "Pro-Fit Kit" tag:

American Powertrain has presented the next-gen Pro-Fit 5- and 6-speed solutions for 1978-1988 GM G Body. Developed on the basis of the TREMEC TKO 5-speed and the dual overdrive Magnum 6-speed gearboxes, these professional fit kits consist of a custom-built tunable cross-arm, robust driveshaft, gearbox support, offset shifting mechanism and speedometer unit.