Perrin Injectors 816cc
280lph Denso Fuel Pump
TurboXS UTEC
TurboXS WRX Turbo Back Exhaust w/o Cat and RFL-Ti Muffler
APS Equal Length Header
Mahle PowerPak Piston Kit
Pauter - Forged Replacement 2.5 Liter STi Rods
APS DR 725 FMIC
HKS SSQV BOV Kit WRX/STI
ACT Subaru STI 04-05 Heavy Duty Clutch Kit
And either this turbo or this one (SZ 55)

 

get it done then take it to a dyno....thats the only way to be sure

 

i was going to do that anyways my friend has a similar setup minus the gt40 turbo kit (he has gt35) and he puts down around 580 at the wheels

 

please dont do the sZ55.... if you want big power go with a rotated set up. 30r, 35r, 40r, only takes very minumal time to swap em out if you want more power....


the 40r is huge, personally i would call this a drag only turbo for a 2.5... or a super track car.

and i would go with a differant BOV, just personal taste.