So i am trynig to figure out what i need to do to get a duramax motor across the border. I will be driving from canada into the USA at the detroit MI border. I called USA customs / border services and they were not very helpfull at all they did not tell me anything. Pretty much all i want to do is drive across the border with the motor in the back of the truck, has anyone done this ? or know whats involed . This is starting to become a real headache i cant find any info on what is needed .