The latest technology in Buick Turbos. Looking for the ulrimate 3 bolt turbo? Then this is for you, the newest 70 MM compressor and the new HPQ Turbine wheel that replaces the GTQ can help make you a winner. The BB version can work with a 3400 stall converter. The Journal bearing needs 3600+ stall or so. This turbo features the new 70mm compressor wheel (2.756" Inducer/3.580" Exducer) and the new HPQ Turbine wheel (3.111" Inducer/2.693" 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 or the "H" 4" in and 3" out Compressor cover. The PTE .63 Turbine housing is available for fast spool up but the PTE .85 housing is recommended for max performance. You can also specify a standard Pressure (13PSI) or High Pressure Actuator(18PSI) If you need help call us for more information.