PSI specializes in the design and manufacture of Standalone Wiring Harnesses for GM Gen II, III, and IV LS based engines and transmissions. These harnesses include the Gen II LT1/LT4, Gen III (24x) LS1/LS6 and Vortec Truck Engines as well as Gen IV (58x) LS2, LS3 and LS7 Engines. In addition to wiring harnesses, you will find other components and kits for retrofitting older vehicles with these power-trains including PCM programming, Fuel Pump Kits, Engine Sensors, Extension Harnesses, Replacement GM connector pigtails and a complete line of hardware to complete your conversion needs!
Need a PSI Conversion kit not listed?
Contact us and we will be glad to quote you a price for any PSI Conversion kit not listed