If it is this car...
http://wwwheels.com/cfapps/car.cfm?ID=1724192
McFadden Friendly Motors of South Haven, Michigan was offering it for sale for $59,900 last Winter. I spoke with Red McFadden (dealership owner) and offered him $55,000 w/o seeing the car. He declined, but mentioned that it had stress cracks on the hood "from being closed improperly". In late April, the same car (same VIN) showed up at FrankfortAutoHaus south of Chicago with an advertised price of $55,000. I called and said I was a cash buyer for the Viper and asked for an appointment to inspect the car. I'm pretty sure I mentioned that I wanted to inspect the frame. They called back two hours later and said that the owner of the dealership was driving the car and didn't want to bring it in unless I was prepared to pay $60,000. I said "no thanks".
I was asking pointed questions, and they did mention that it had stress cracks on the hood and the passenger door. These may or may not be fixed by now (if they're telling you it's in "excellent" condition), but you can tell from pictures that it's missing the front emblem (possible fascia replacement?).
Very frustrating that a dealership won't bend over backwards to let a potential customer see a car. 53.5 is a GREAT price if they will let you inspect the car top AND especially BOTTOM. But to buy it sight unseen... I wouldn't do it.