The latest technology in Buick Turbos. We use this turbo in most street applications the BB version can work with a 2800 stall converter. The Journal bearing needs 3200 stall or so. This turbo features the 61mm compressor wheel (2.416" Inducer/3.227" Exducer) and the new HP57 Turbine wheel (2.795" Inducer/2.437" Exducer). You get your choice of a journal bearing CHRA or the fast spooling water cooled Ball Bearing version. You also get your choice of comressor covers the "E" with 3" in and 2" out, the "S" 4" in and 2.5" out or the Ported shroud version of the "S". The PTE .63 Turbine housing is used for fast spool up and you can specify a standard Pressure (13PSI) or High Pressure Actuator(18PSI) If you need help call us for more information