So first off, never have I ever meddled with ring and pinions, pinion bearings, gearing, so on and so forth when it comes to differentials. I took my 83 dodge ( a while back now) to have new bearings and i forget all what put in thinking itd fix the clunk of my chryco 9 3/4 (i believe) going into gear. Well, as this was all done i was told that it needs a new ring and pinion in order to be geared correctly and didnt have the extra cash at the time to go ahead with it. Is this true or? Like I said, i have no idea but im looking for advice on how to get my truck back on the road. It drives down the road now but it whines like crazy so its been sitting for about a year now. Please any help is greatly appreciated.