On a side note, here are a few BB turbos Garrett will soon be releasing. I understand yall are probably looking for something bigger, but here is some info anyhow.
stage I GT3782R: Featuring an 82mm compressor wheel that is capable of an increase of 170+hp over stock.
stage II GT3782R: Featuring a higher flowing 82mm compressor wheel that can produce an increase of 270+hp over stock.
stage III GT3788R: Features a super-high flowing 88mm compressor wheel that can produce an additional 370+hp over stock.
Each turbo comes as a kit and includes:
*Oil inlet fitting kit w/restrictor
*Water line kit
*Turbine inlet Bolts
*Gasket kit
*Turbine outlet adapter kit
We also have the MAPs for each one. This is all the info we have right now on them, pricing should be released soon.