I was waiting for somebody to chime in.

The 959, the Mclaren F1, and a whole host of other cars were not imported under a restriction free status....sorry.

Yes they are non-conforming, and were imported under "show/Display vehicle". Remember, they meet the criteria found on http://www.nhtsa.dot.gov/cars/rules/...osd072003.html
especially the part that says:
Technological significance – You must identify (be specific) the technology, engineering, and construction features of the vehicle that are advanced and of an unusual nature not commonly found in motor vehicles manufactured in the same time period;

To find a list of ALL cars that have been imported on a non-restricted basis (conforming and non-conforming), well, here is the list... http://www.nhtsa.dot.gov/cars/rules/...LIG102803.html

And for some reason, I'm sure they didn't crash test that many skylines. In fact, according to the NHTSA documents they submitted,they only showed a R33 being crash tested......hmmmm

Charles