Quote Originally Posted by gareth_oau View Post
Team V, an easy way for the government is to base the power to weight ratio approvals on ex factory vehicles, and any mods at all will require the owner to obtain (at his/her expense) a certified 'ptwr' to be presented before the car would be approved.
That could be a viable solution.
Any modifications performed on the car to require a DOT certificate (sort of like the engineering certificate for high performance mods now)

Then they just need to put a plaque on the inside of the engine bay/door sill with the registered modification number and link the database of certifications to police PDA's.

Of course there will be a few people who try to go illegal and mod their cars without certification however it would allow a better equilibrium than we have now.