By far the best possible pulley solution to gain an honest 4# of boost. CNC machined aircraft aluminum. Includes proper length supercharger belt, pulley tool kit.
I am very pleased with this kit. I have an 02 f150 harley Davidson edition. The only reason I didn't give it five stars is because the belt was way too tight. I had to fight it to get it on and jow the tensioner is maxxed out.