The Edelbrock E-Force supercharger does require forged internals if you want your engine to last for a long time.
Python Grips are the best. either wrapping up ones or the original ones. Eforce, Ektelon , and Gearbox offer grips aswell Gamma Tennis Grips are also effective.
The number one maker of racquetball racquets is currently Ektelon. They have a little under 50% of the market. Then, they're followed by everybody else....Eforce, Wilson, Head, and ProKennex.