They probably could, but I'd guess that would involve ordering different parts so could increase the costs.
I'm currently running a diff from a Mk III Toyota Supra because I wanted to gear the car for a 120mph top speed. All the ring & pinion sets over a 4.27 are "motor$ports" parts, so I was looking at over $1000 for just the gears. I had some custom bits made (mounts & driveshaft) and even had a diff built for that same amount of money. If I had it to do over again though, I'd stick with the BMW medium case diff and go with a ratio in the 4.0 range because of the torque curve of these motors.
Dave |