[Brian]

Mike, I self imported an R21 from Chris at Mach I Transmissions (UK)this past spring. Granted it is a rebuilt unit, but it has been converted to accept either a left or right hand gear change, and incoprorates all of the proven quick shift mods that the UK boys have sorted out. It DOES NOT have the locking differential, or heavier input shaft that have been recently discussed. However, I plan on keeping the H.P. to manageable levels, say 375 to 400, so this should perform adequately for me. The reality for me is how fast does "REAL FAST" have to be? I never plan on fender to fender encounters on a track. Price, I don't think it appropriate for me to advertise this for Chris, but it was very reasonable. If you wish, email me for additional specifics about adapters, clutch, CV joints, etc. Brian