I know they have 2 different window carriers and have fit them in before so. I have also been there too.
They fit. 7 5/8 26 spline carrier open 2 large window case. Try it some time.
THIS is all I do rear differentials.
There os a clam shell open carrier case and then a 7.5 2 large window case also. Those 7.5 7.6 carrier are tricky some time I D ing.
Same truble on power trax units if you buy the wrong one for the wrong case it will EAT it self in to or three test runs on the street.
TIP:Be careful everyone when installing the Power Trax you must have the center distance to Richmond Power Trax exact specs or it will be junk QUICK.
Good luck