Here's one in the Boston area on Craigslist:
http://boston.craigslist.org/nos/cto/4911714751.html
The blurb: "The guy is working on the car -- engine and transaxle rebuilt, car is in primer, etc. He is moving from Duxbury and would like to trade for a running Speedster Replicar. I'm not very interested, but thought you may know someone who might be interested in trading their replicar for a 'real' Porsche. Go to Boston Craig List, cars for sale, Porsche 356 & take a look."