Troy -- We can give you a bunch of conjecture all day long .... Check with your local DMV/DOT for your state requirements that apply to your particular circumstance.
This very subject gets brought up on all of the old truck forums on a regular basis and as far as I've seen, no one has come up with a definitive answer -- including the state offices.
Generates a lot of head scratching, though!
Good luck!
If you can get a state official to tell you that you don't need commercial tags or a CDL -- get them to put it in writing over their official signature! (Good luck with that, too
)
