What do people even do with stolen NSX's?
My gut says it will turn up somewhere, but you should report it to the police, so if it does turn up, or gets pulled over, its VIN is reported as stolen and they will know to contact you.
EDIT: According to your signature its and Automatic '97 NSX? According to the NSX Prime wiki, there are only 19 Black/Tan NSX-Ts with an Auto tranni ever made. And only 1 was made in 1997...that should narrow it down.