This is a good place to start:
Bring the used NSX checklist with you when inspecting the vehicle:
Check the technical service bulletins to make sure that all affected issues have been addressed:
Verify that the maintenance schedule (for both mileage AND time related services) have been performed as recommended:
Finally, bring an objective buddy with you so that emotions won't cloud your judgement. I took a friend who could spot repaints, and found flaws I would have not noticed (look in the door jams and under the hood for signs of overspray).
P.S., I would only consider a car within the snap range if the seller can produce proof that the repair has been done by a qualified dealer/mechanic. Also, have the car inspected by a qualified dealer/mechanic. I was fortunate enough to have Mark Basch (NSX Tech) check mine (for free too--nice guy!).
[This message has been edited by PHOEN$X (edited 26 September 2002).]