Was there not some kind of hold down that were in a Firebird/Trans Am car for T-Tops? I could have sworn I saw it once when a friend from work had the car. They were put in a slant position. I would like to find one in the junk yard and try it in the regal.
I've wondered the same thing. If you look here http://perfauto.tripod.com/data/12-240.pdf at #30 & #31, they show 2 different bags, and a strap used on the 83 & 84's. Anyone know what they were for?