My dad just ordered a GT500. He has not received it yet, and he plans to leave it stock. At least that's what he says now. Anyways, are the supercharger pulleys pressed on like the 03-04 Cobras? Some of the websites that I have been looking at have power packages available, and say they have keyed pullies for quick interchage. Anybody know the deal, I have fallen behind already on this brand new era of the Cobra.