Specs:

• Compressor: HP-58
• Turbine: P Trim (65mm)
• Turbine A/R: .58

From Turbonetics:
"For the serious competitor only, Turbonetics offers custommatched and custom-built turbochargers designed to get you across the finish line first! Designated the T-Series, this turbo family incorporates the latest “state-of-the-art” turbocharger aerodynamics and the toughest durability available to the maximum performance engine builder. With a wide range of flow capacities (HP58, HP61, HP64, HP66, HP70, HP72 and HP76) capable of supporting 550 to 950 HP with a single turbo. All T-Series turbos are custom built to your specific application and include the TURBONETICS Big Shaft components. Dynamic seal is standard, but carbon seal configurations are available (see below). Your choice of STG. 5, P, or S trim turbine: .58, .69, .70, .81 or .96 A/R “ on-center” and a full range of tangential style turbine housings are optional (see page 47). S trim and the patented Turbonetics’ Ceramic Ball-Bearing option are also available."