These transmissions have been used in multiple BMW platforms and have been supported for over a decade. The main weakness being the C and E forward clutches and lubrication. All transmissions will include all new seals/filters/gaskets/orings/fluid and all clutch packs, upgraded valvebody boreplugs, pressure regulator, accumulator piston kit and much more. 
 
Plus variants for Stage 1 will have billet C and E hubs (sonnax)
 
Stage 1 - Raybestos A, B, C, D and E clutches. Up to 900HP