I've been waiting patiently for my son to give back a 1993 240 5-speed Sedan so that I can swap the stick into a 1993 automatic wagon. It seems like that might never happen. So . . .

I have a 1990 240 stick Sedan donor. I was ready to use that car for the transplant until I got to checking the Bentley and found out that there are 3 different tone wheels for speed sensing used in the 240's. Of course, I would have liked to swap the 1990 rear axle without breaking it down because I learned long ago that changing a final drive ratio will affect drivability.

My questions:

1/Can I replace the tone wheel installed in the 1990 rear end with the one from the 1993 with no problems? I want to do this to maintain speedometer accuracy and proper anti-lock brake functionality.

2/ If the tone wheels are a one-for-one swap, will I be able to maintain the original setup of the differential?

Thanks to one and all.

Rich (near The Burgh)