The JT58 Series of turbo is designed for those that want to make 400rwhp, with minimal lag, on 93 octane unleaded gasoline. Up the boost, and this turbo will yield 450+ rwhp. This is, in my opinion, the best all around street turbo for the MKIII Toyota Supra, 450rwhp for everyday use on the street, and more with race gas for drag racing at the track. The cold side of this potent turbo is a 58mm 60-1 T04E Compressor wheel. This product uses the LIPP "BOSS Series" stainless steel exhaust housing, and High Performance single port wastegate. This makes the JT Series turbos bolt onto the factory exhaust manifold, mating with the stock exhaust system (altho a 3" exhaust is recommended) for easy installation.