Removing Theft Proof Screws on barracuda gas cap?

NO,NO,NO. Small screwdriver, light taps, work them out from the outside. No vice grips. When re-Install, screw them in, tap with mallet to tighten. That is how the dealer did it in 1970. The same technique was used to remove the Antenna from the fender.
Worked perfectly!! Thanks Oldmopardude you saved me from buying the tool!!