Just curious Kyle, why did you need to get 4.37s? This is a loaded question.....
my rear diff blew up out of nowhere going down the road. started as a light clicking, sounded like a BANGBANGBANG by the time i got home. i wanted to get my truck back on the road ASAP so i wanted a 4.375 3rd to match my front(factory for '79-80).
i got lucky here, the '90 IFS rear housing i had bought a few months earlier for $100 had a 4.37 3rd in it. crazy hillbilly swappers...
