Turbocharger: The turbo that came on the car, a stocker, was junk. The compressor wheel had 1/4" axial play, causing it to rub the compressor housing. It also had a bad bearing, which pumped the intercooler, and the intake full of oil. I had a low mileage stock 87 Grand National turbo I bought for my Malibu Wagon twin turbo project, so I just threw that turbo on this. I took the inlet bell, and bellmouthed it, and port matched it to the compressor. I also hogged out the exhaust elbow and the wastegate puck hole to help with boost creep.