If you have an automatic tranny in your NA, it is only rated for 240 ft #'s (330nm)of torque. I just changed the fluid and filter in mine and the power the supercharger added was definately too much for it(LOTS of wear). I can 100% tell you that getting an SRT6 is the best possible solution unless you have a six speed manual. Also there probably isn't enough room for the underdrive pulley required if you use the SRT6 supercharger. LS1 is my next and last project for the Xfire.....