Narrowing a 8 3/4 diff.

in no way, am I denigrating what you've done. I applaud your ingenuity and ambition. yes, some of the oem welds, are crude at best, but I've probably owned 30 or 40, and probably worked on 30 or 40 more 8-3/4" rear axled cars, and I don't recall a single one leaking from the seams. LOL