| If your mate works for BMW is he's probably basing the price on maindealer price rates, which £500 I think would be about right.
Can't you give your mate cash for a private job?
I've never driven a rwd car with a quaife, but its to do with the way they keep swapping power from wheel to wheel to find grip, rather than laying down the power evenly to the wheels like a plate or welded diff. |