Actually it is worse than that. When the bumper on your 60s Mustang buckles it will smash right into the rest of the car resulting in serious body damage. I was rear ended pretty hard by a moron a few months ago in my 96 GT. All that happened to the car was that the bumper was scratched and I had to replace one of the side reflectors. If I had been hit in the just as hard in my 66 Mustang I would have had to not only replace the rear bumper but the car would also require replacement or major repairs to all of the back panels, the quarter panels, the gas tank and the trunk. QCStang, that was funny. Seems like a lot of people only like capitalism if it helps them.