Hi Gary,

Another possability would be to make the locker with the o.d. to match the 7" ring gear and drill the ring gear mounting flange with 20 holes, 10 for the 7" PCD and 10 more for the 7.5" PCD. A shim ring would be needed to center the 7.5" ring gear. By the way there is some indication from drawings in the Service Manual that the 7.5" ring gear mounting holes are not evenly spaced.

(Dave--please check both front and rear ring gears for spacing and PCD)

The lowest user cost and best manufacturing inventory would be if the same locker could be uesd in either the front or the rear along with the origional front and rear ring and pinions and 3rd member housings.

The lowest cost for puting a used rear 26 spline LSD in the front would be if the 7.5" ring gear can stay on the diff and the rear pinion can be transfered to the front 3rd member housing.

I hope the pinion hypoid offset is the same in both front and rear to allow proper mesh if the rear ring and pinion has to be installed in the front 3rd member housing.