I don't know the answer to your question, but when dealing with anything to do with the Feds/EPA, CA, air research board, or whatever its called involving required smog equipment, I'd be making some phones calls FIRST, to make sure i had all my ducks in a row before i spent a dime on a truck from Japan,
The reason i say this, i had a friend who bought a sports car on the gray market that was supposed to be smog legal here in America, Problem is, when he tried to pick it up at the port of Los Angeles customs officials WOULD NOT let him take delivery,
Long story short, it cost him big money not only in attorneys fees, storage cost, but he had to have a shop retro fit all the smog equipment to to car that the EPA required before he could take delivery and title/register the car, All in all this took months of his time to fix,