Very similar to a Berkeley more or less the early 12JA, some of the parts are inerchangable I believe the shafts are the same (2" longer version), the bowl will bolt up, Impellers also...not sure on wear ring. Uses clipper seal instead of packings. 4 bolts need to be redrilled to use a Berkeley on the Bayjet intake (theres also some history between Bay Jet and Roy Miersch towards the end, But I don't remember the specifics, perhaps my Dad will remember). The nozzle adapter is much worse than even the early Dominators, Same bolt pattern. The bowls have extremely flat inlet vains, and water lubed glacier bearings.