Specs:

• Compressor: 60-1 Fullsize
• Turbine: Stage 5 (62mm)
• Turbine A/R: .58

From Turbonetics:
"Representing the careful marriage of a unique high-flow /high-efficiency compressor section teamed up with a T4 turbine section, the 60-1 has proven itself in every competitive motorsport application from drag racing to Bonneville. Available with either the standard (4" inlet, 2.5" discharge) compressor housing or the 60-1 Hi-Fi (2.75" inlet, 2" discharge) compressor housing, the 60-1 will outflow any standard T04B with ease! The 60-1 Hi-Fi will deliver approximately 90-95% of the flow capacity of the standard 60-1."

Also available in ball bearing, add $350.