Trailers.......get it weighed at a truck scale and then send the weight slip to dan at detroit vintage cycle and he will get you a michigan "homebuilt" tag. in michigan trailers pay one time for a plate, $75.00. michigan does not title trailers, the registration with the plate is proof of ownership. once you get a plate, they will also give you an "application for title"
and they will send you a title if you want for a fee. one more thing, the trailer MUST weigh
LESS THAN 2500LBS. i have 4 trailers bought thru gl and that is how i did it.
Also, for a vin you can use anything you want. call it 14 or whatever because it is now "homebuilt".