It's important to find out exactly what kind of replacement gears, materials, etc. that this guy used in this trans. A lot of chinese junk out there. In my opinion if youre going to spend that much $2800 you might as well get one from a reputable source. I recomend you contact Craig Wright at "The Wright Connection"
[email protected]
Send me a PM and I can give you his phone number. He's working on my M20 right now! And he completely rebuilt an M22 for me back in 2007 which I've had zero issues with.