no their is no law stopping you from doing it, their are a few cars that i know personally passed the inspection in pos lic. and the officers liked the idea.
ok kool....kw the police like to give tickets and seize cars...so just making sure the car will still b road worthy in their eyes.... although its a great safety measure....
Nope no law for roll cages, Just dont go about messing around the chassis number area. I had a car inspected over the pit a few years ago that had a 6 point roll cage and had no problem. Plus rally cars that drive around as daily cars and no problem . Some pickups pose with roll bars on their trays and they have no problem, these are inspected every year with no problem.