As for the plates, so long as your drivers licenses matches your residence and where the car is plated, you are under that states ruling for laws on cars,bikes, trucks ext. When traveling to another state here you are not required to conform to their laws of plating, window tint, or what ever mods may be legal for your state but not for them. Here in Michigan we don't have any emission regulations so you can run without a catalytic converter for example, how the supra is and drive in north Carolina where i moved from with no head ache. But if you live in north Carolina where they have emission inspections and your caught without a catalytic converter they don't renew your tags till you comply with their standards. Same with if you go to new York where they have to have front plates, I wouldn't have to run a front plate there unless i moved there to live, so sucks for my parents on that once since they live in ny