difference between 4x4 Cosworth rear diff and XR4x4???
What is the difference if any between rear diffs for 4x4 Sapph and 2.9 XR4x4?
3.62:1 ratio on both.
XR has flat faces on the drive flanges I believe, I seem to remember that Cosworth one may have a recess on the drive flanges to locate with the driveshafts????