Not sure of the legality of what you want to do. But I CAN tell you that the #1 attorney (Bennett) for the Montana LLC game ceased all LLC services for the obvious reasons.
This may not apply to an international resident, so I apologize if you’re already versed on what’s going on here in the states.
California is one such state who, only through rumors, is going after Montana plates on high profile vehicles; and I’m not referring to height.
And, before anyone starts Cali-bashing, pay attention to others. This week, I was just told by a friend who lives in Wyoming that the Jackson LE is pulling over EVERY RV with a Montana plate!
I hope these rumors are unfounded, but nonetheless, the legal path, as any CPA or personal attorney will advise, is extremely narrow if you live in states that take exception to tax advantages, when your vehicle is registered in another state, even if it is your part time domicile!