UPDATE: I decided to purchase a new set of Garrett 2860R -5 and managed to pull a 274kw @ 16psi.
I was hoping to pull 300kw...Car has cat back exhaust, front pipes, dump pipes, Power FC, Gizmo Boost Controller and Bosch 040 Fuel Pump.
Oh Well.........I think a TRUST T78 is on the list now *S*