T3 Turbocharger

Inlet 2.36"
Outlet 2
Bearing Type Wet Float Bearings
Oil Inlet 1/8 Npt
Max Psi Capacity 25psi
Compressor .42 Ar Compressor
Turbine .48 Ar Turbine
Flange Type T3 Flange
Down Pipe Flange 4 Bolt
Max Hp 325-350


T28 Turbocharger w/ internal wastegate

Inlet 2.25"
Outlet 2
Bearing Type Wet Float Bearings
Max Psi Capacity 27psi
Compressor .42 Ar Compressor
Turbine .48 Ar Turbine
Flange Type T25/T28 Flange
Down Pipe Flange 5 Bolt
Max Hp 350

As you can see, very similar. T25/T28 comes stock on the Nissan SR20DET, the T3 is the whore turbo, commonly found on the SVO Mustang, the Nissan 280ZX and 300ZX, and several other cars.