After much scrapyard trolling, I've found a 7x C30 with a 14B diff that looks like it'll bolt in. Yay.
The trans and AA BH from the parts truck are pending sale for almost what I have in the truck so the deal looks as good as hoped. My labor at 100* temps is unpaid
Still have to get the non-rolling carcass out of my driveway. Not sure the city will like it sitting there. The "I'll take you're scrap car" people are startlingly choosy...