I purchased the kit,minus the resonator and y-pipe. The intake is ok, but i ditched the stock filter for a large K&N. The plugs they sent were only single platinums instead of double platinums. Also, I sold the underdrive crank pulley. The only thing I used from the kit was they-pipe, which i bought previously, and the p/s pulley. I reccomend not purchasing the kit. Most of the gains come from the y-pipe. J
