Sorry man, but according to everything that I have read, heard, seen (a local has a GT-St, so I get to listen to him b|tch about this) the Skyline is not EPA or DOT approved and cannot legally be driven on US roads without proper and proven modifications. From
http://www.skylinegtr.com (MotorRex):
-"We have had to go though all of the mandatory requirements for the DOT and EPA . Including crash testing , air bag testing , and OBD II to meet the Code of Federal Regulation requirements. Since Nissan did not perform any of these requirements , we have independently completed the research and development. The pricing reflects our cost of reseach and development."
-"Some of the basic items that are changed are things such as US emissions, speedometer , crash structure , lighting , US VIN , warning , and information labels."
-"The vehicle gets the EPA modifications then it goes to the emissions lab for testing. The EPA testing will take approximately one week. Then the vehicle has a 15 day EPA hold. Once the vehicle is at our facility again it will take us approximately 2 weeks to make the necessary modifications and take the required pictures of the vehicle. Once the vehicle has been modified , and a compliance package put together and sent to the Department of Transportation , the vehicle goes into a mandatory 30 day DOT hold. Skylines less than 2 years old can not currently be offered for sale in California. For more information regarding this please read
http://www.arb.ca.gov/html/lawsregs.htm . If the vehicle is for California , then after the DOT and EPA paperwork is cleared , the vehicle goes to the California referee center for California certification. After the vehicle is tested , then the vehicle once again goes into a hold - 5 days for California."
-"There are ways to import vehicles into the US. Normally they are imported as substaincially similar to a US model. Then what happens is anything that is different between the US DOT legal vehicle and the vehicle from overseas would need to be changed to be the same as a US model. For example - headlights , tailights , mph speedometer cluster. The DOT no longer accepts right hand drive cars as being substaincially similar to the US model unless the manufacturer provides information to the DOT stating the vehicles are substancially similar. Additionally the engine in the vehicle must be available in the US or the engine must be certified for the US."
So, no, in fact the GT-R is NOT legal to drive in the US fresh off the boat from JDM.