anyone out their have any suggestions for a brand of posi unit for the rear. looking into a posi unit insead of a locker even though i can get a locker unit for free. i do not like lockers have sceen too many holes in the sides of cases.
also going from a 372 to a 410 rear gear. i thought i heard that the front has to be changed too to make the 4wd work correctly? or does it not matter? i have 305 75 17 wheels on the truck.

 

Auburn and Eaton make some LSDs for the 8.5-8.6" 10 bolt rear. I personally will be going with a Detriot locker myself. I've been pretty happy with the performance and feel of those I've seen installed in F-bodies w/ 7.5" 10 bolts or even Ford 9"s.

If you are talking about the G80 Eaton factory lockers that is understandable but some aftermarket units perfrorm very well and do not disengage like the OE unit.

Richard