I recently purchased a 2011 GT500 with 170 miles, yes 170. I want to wake it up some with a budget of around $2500. Here is what one of the vendors on this forum recommended: Custom tune with SCT X4 tuner, 2.6" pulley, Steeda idler, Steeda heat exchanger, cold air intake, Borla axle back, iridium spark plugs. This brings me over my budget by $300. Also considered porting the stock supercharger but was told it was a waste of money Thoughts?