The ECS / Paxton SC600 Kit is a custom combination of products and components developed and designed by ECS. It is ONLY AVAILABLE THRU ECS. Critical parts are fabricated exclusively for ECS to our own rigorous design standards developed by our research and development team. This combination of components is designed specifically to reliably produce the most horsepower and driveabilty from your Paxton Supercharger, both on the road and the racetrack