I would like to know if it is a bad idea to install the rear tie down brackets on my Dearborn built 1970 Mach 1 with dual exhaust as part of the restoration, or is it frond on by the judges?? Pro's: car is easily tied down if trailered, Con's: may interfere with springs and exhaust (mine do not), they do stick down below the exhaust and springs and are visible from the rear and side view of the car kind of ruining the blackout effect on the trunk drop pinch weld as 1970 are bare metal color. I understand NOT ALL where removed at the dealer. Also did only the 69 cars have the removal sticker on the license plate bracket or did the 70's also have the sticker.