i talked to a epa/dot certified importer and yes it is expensive and difficult to import a jdm car. you have to get a crash test report from the manufacturer and have the exaust fixed/modified to pass emission. It is though, easier to import it as a race car but you cant drive it on the road or have it registered. to convert the car to dot is $2500, and $2500 for epa(includes labor and documentation), then you add duty, bonds, insurance, parts test, and transportation.