we recently gave out numerous stage 3 kits and just got back some input from an installation . initially, the kit was installed and taken to Bradenton raceway where the stock clutch was overpowered and tended to slip, traction was an issue, and no complete tuning was performed to tune it in correctly. this was just baselining, which netted a 12.00@112mph. it is a daily driven 2004 model SRT4 with stage 2 kit and was turning 12.8's prior to the stage 3 installation. you gotta luv these cars.