I would use the HS-625 for throttle and get the HS-645 for the steering its got more torque which is important. I dont think that pipe will do much to help in the performance department sure does look bling bling though, im pretty sure those are made for monster trucks. Check out the line of ofna tuned pipes they are nice and will give you some performance gains. If your looking to add a little more performance/strengthening get some CNC shock towers and cvd drivelines as well.