lol i have one and thinking going a diff. way back to a 3.9 and a second gearbox what will make me abel to change to a lower or higer ratio with a controller
how much are you willing to spend it was redone and is 75/25
a friend back in germany does that he is selling all kinds of diff. versions
i think a doit yourself set with all neded stuff and seals was about $900
but i tell you theys are the best 900 bugs i ever paid lol
he also does special made diff. for the BMW's like a 2.23 for a E30 turbo