I've been advised to update (thanks marv springer), my rear diff in preparation for blazer bash 02. So the question is which "box locker" to buy? Please let me know your experiences with LockRite, Powertrax, Detroit E-Z locker etc. Before you all start..I know, a new carrier and true locker is a better fix. I just have the time a money for the quick fix... Blazer details: 85, 2.5 inch lift, open 10 bolts, 3.73s, 33s, 383 and 700R4. Thanks in advance!