the law says if it's under 50cc's, cannot exceed 30mph, and is automatic it's a moped. my derbi gpr is 50cc's goes about 70-75mph and is 6 speed manual shift..what should it be classified as, a motocycle or a moped? will they have to put it on a dyno to re-classify it? should i mod the cylinder and piston to more than 50cc's so it's not so borderline and then have it checked out?