Standard housing is the T3, 4bolt, 3inch exhaust housing.

Dual Ball Bearing GT30R Turbo assembly with T3 style housing with T3 inlet flange w/ 4 bolt style exit. T04E style compressor housing with 4.00 inlet and 2.00" outlet. Very Good response turbo for 4 Cyl applications. This turbo has a flow capacity of about 500HP. This turbo would be the same as HKS GT3037. The GT30R turbine housings with 4 bolt exit are made out of ductile Ni-Resist iron (has a nickel content of about 38%). This material is much better at withstanding high exhaust gas temperatures than regular cast iron.

Turbine
-Wheel: 60mm w/ 84 trim
-Housing: .63 ar, .82 ar, 1.06 ar
-Maps

Compressor
-Wheel: 76.2mm w/ 56 trim
-Housing: .60 ar
-Maps

This unit is usually in stock and ships withing 1-2 days.