[GTES-t]

This is directly from NHTSA's iport guidelines:

While there is no specific restriction on importing a right-hand drive vehicle, an eligibility number based on a substantially similar U.S.- certified motor vehicle may not apply. Our experience has shown that the safety performance of right-hand drive vehicles is not necessarily the same as that of apparently similar left-hand drive vehicles offered for sale in this country. However, we will consider them "substantially similar" if the manufacturer advises us that the right-hand drive vehicle would perform the same as the certified left-hand drive vehicle in crash tests. If the vehicle is not substantially similar to one sold in the U.S., the RI would have to demonstrate that the vehicle, when modified, would comply with the applicable Federal motor vehicle safety standards, which could involve crash testing several vehicles.

So, either you get a letter from Nissan or Honda, etc. Which they won't risk doing because if you get into an accident, it leaves them wide open for a lawsuit. So, that leaves going through a registered importer.

Here's the link to the info I quoted, which is on the vehicle eligibility list.
http://www.nhtsa.dot.gov/cars/rules/...LIG102803.html