The package is sort of like the Mach 1 package for the Sportsroof. No performance gains unless you checked other boxes on the order. Ford was know for doing a lot of packages that made you think the car was fast but just smoke and mirrors. Examples would be the California Special, Twister Special, High Country Special, Sprint, etc.
I do not think anyone is out there collecting these. If you like a coupe it does dress it up for sure.
Sort of like the SS package or Super Sport package on a Chevy. In the beginning you could get a SS with a 6 cylinder. It was a dress up package.
Tape is cheap.