Performance and Appearance Products for Late-model Muscle Cars and Full-Size Trucks and SUVs.
Wilson Manifolds, AFR Heads, Custom Cylinder Heads, Jesel, Custom Camshafts, Manley, Callies, K&P Enginnereing, Johnson Lifters and Wilwood Engineering
Your Source For LSX Conversion Parts. PSI specializes in the design and manufacture of GM Standalone Wiring Harnesses for LT1 and LS Engines and Transmissions.