For the turbo I would go with a Dominator 3 or ATP 30r 0r 35r.
I would go with TurboXS turboback exhaust, Deatschwerks 850cc injectors(or bigger if you wanna run E85), TGV deletes, APS Turbo Inlet, APS fuel rails, Aeromotive FPR, CSS FMIC, and a big MAF intake that would work with the FMIC.
For EM I would use a Hydra or AEM standalone ECU. You can get away with an AccessPORT or OS tune though. You will also want an upgraded boost controller like the AVC-R, Eboost2, DTEC, or Profec SpecB.
At 400WHP with lots of hard use expect the motor to last about a year or so.
My name is Ken and I am a HP Junkie.