I'm pretty sure that it is very simple and inexpensive to import the car back into the U.S. (easier than bringing one up to Canada). However, I don't know a heck of a lot about going that way (sorry). I would certainly cooperate with someone wanting to take it down there. I have sold motorbikes to the U.S. without any hassle.
More details? I recently had it checked out by a decent dealer up here, compression etc., all was excellent. There are a few very small paint chips and a little rash on a small area at the front of the side pods, the paint is original and otherwise in excellent condition. The car hasn't been run hard or raced (for example the paint is still white on the calipers etc.). The interior is excellent with a small wear spot on the passenger side where the seat belt receiver rubs. I'm not sure how it could be in better condition for its miles (29000). It hasn't been winter driven (though that is probably a given for Vipers). What else would you like to know?