I was reading the CarFax on them and they are all Chrysler stock that they auctioned off. It appears that Chrysler doesn't have any of the SRT6 left at all.

I may go somewhere closer since it is about 1,700 miles from me here in Maine. It would be interesting to here about your trip. If you want CarFax info on one of the ones I was looking at, send me the VIN in a email - same name at pivot.net