The 7.5 rear in my 86 cutlass has 215k on it. Trying to decide on upgrading the 2.14 open rear to 3.23-3.73 posi, or buying a 9" housing and axles, looking for a used center section. Engine only has about 250 hp, the 9" route is overkill for now. Been checking online for complete rear assemblies, unfortunately they are out of my price range. Been reading about the usual upgrade tricks like welded the tubes, solid crush sleeve and so on. Just wondering of if anyone else is running the 7.5 with any luck. Thanks in advance!