I am replacing an open 28 spline carrier with a 31 spline track lock unit. I assume the 31 spline unit will have the 3.062" bearings (it hasn't arrived yet to confirm), and I didn't think to check until just now, but my 28 spline unit has 2.891" bearings. So the question is, is the 31 spline going to fit in the case that the 28 spline came out of? Do I need to have the case bored? New adjusters? New case? Thanks for any input!


David, I'm not sure how this jumped from transmission/differential to brakes and suspension, please feel free to move!!