This Entry Level unit features the following: 61.37mm inducer compressor wheel Compressor cover options: - "E" compressor cover 3.0" inlet/2.0" outlet - "S" compressor cover 4.0" inlet/2.5" outlet 64.56mm exducer turbine wheel Turbine housing options: - T3 .63 or .82 A/R with 4 bolt discharge - T3 .63 A/R with 5 bolt discharge (with or without wastegate hole) - T4 Tangential .58, .68, .81, & .96 A/R with 3 5/8" V-Band discharge - T4 On-Center .69 or .85 A/R 360 degree journal bearing system PTE's Entry Level turbochargers help you get the high-end performance you crave in a smaller package at an affordable price.