I've been toying with this for some time on my Rover. It's got the R380 5speed. Really a pretty crappy transmission, rare, impossible to get rebuilt in the states it seems. But, because it's rare and a 5 speed people do seem to want them in their rovers. I hit a road block when the metal company sent me a pice of aluminum twice as thick as I ordered.... and none of the 5 shops around here seem to have the equipment to cut in in half. (so I'm basically out 180 bucks plus the shipping.) The project kind of went into hibernation after. The parts that got done so far are we machined the original rover flywheel to accept the parts to bolt to the om617, along with a new custom throwout bearing. I also had the clutch plate resurfaced with much better material. But as I look at the project, I'm thinking that I may just part it and use the engine in something else simpler, like a Toyota. (since there are ready off the shelf kits for these that are ready to go and done often.)