The carrier and center bearing look fine. The flex disks are still good. Driveshaft looks fine. If suspension and bearing related noises are not load-sensitive that would seem to leave the differential or trans. I really don't think I have a trans. problem.

Anybody have any thoughts about adjusting/rebuilding differentials vs. finding a good used one? How long can a rumbling/growling diff. go before destruction? What happens when it self-destructs (i.e. is it likely to be dangerous or hazardous to other expensive parts like half shafts?)

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1985 300SD 99K