Why the hell are you looking on Craigslist for only 88 XJs w. an AW4. That's a piss-poor indicator. Looks on car-parts.com for ANY year AW4 (in 2WD or 4WD whatever the OP has) and you'll find plenty with their TCUs available. Plus with a guarantee that it'll work, not from some redneck yahoo with a blown tranny. Nothing's drying up in the SE any more than everywhere else. The freaking cars are getting older, they are getting scrapped, everywhere equally. That's life. Quit whining...