The HD8082 Turbocharger from Forced Performance is a great turbo for stock to mildly built LS motors.
The HD8082 turbocharger features the larger full size S400 comp cover and billet 80mm compressor wheel and a very high flowing 87x82mm turbine wheel. It is unusual to have the larger 82mm exducer size turbine in the T4 S400 size, typically it is a 72 or 76mm exducer diameter which results in high back pressure. You can expect anywhere from 500whp to 900whp from this turbo in a single turbo application depending on engine size and boost pressure.
The oil inlet is 1/4 NPT. The optional downpipe flange/clamp are set up for a 4" downpipe. It has a conventional T4 S400 Spec outlet flange.