Has anyone here ran a GTX4508R on a mod motor and how were your results? I'm trying to decide between this turbo and GTX4708R or GT4788. Not wanting it to take forever to spool considering mod motors don't have a lot of cubes. But do want it to push a 03 mustang weighing 3400ish lbs down in the 8's. Running a custom t4 kit with 4'' down pipe. Launches @4500 on tb.