turn your buddy onto this forum:
audifans.com.
While not as active as Pelican, there's a mailing list with a lot of enthusiasts (who know their stuff, particularly when it comes to the older modesl) and the site has some good classifieds in the Marketplace section. He can find a 4000 getting parted out, buy another car, post a want-to-buy ad, etc.
Good luck to him, I had a 86 4000cs quattro, that car was a ton of fun to drive in the snow. It's been replaced with a series of turbocharged avants, which have more room and go faster!
