I just found out that a guy I know from our common work (we're not at the same place, but we do similar things) is a dealer who buys on order at the Ephrata, PA auction, one of the largest in the nation.
He has found and purchased Porsches for folks like us before and is willing to help you buy a clean used Porsche from this auction. Here's his information:
Steve Prokopchak
nospam-Calledtogether@earthlink.net
(remove the "nospam-" before sending it)
If you contact him to look for a car for you, be sure to tell him Randall Neighbour referred you. It won't get you a better deal, but it will help him know that you're not a completely bogus buyer making him work for nothing.
Steve is a good man and will not deceive you or knowingly sell you a car that is problematic.