Ask and you shall recieve! (Flip Top Gas cap Adapter)

I can say this....
64 Barracuda, has a late 70's truck, we placed it up next to the truck and it sure looked like it would fit.
Get me a depth of the recessed area out to the quarter panel, and Ill tell ya whether I thin it fill fit. All the diameters should be good since the filler necks are fairly standard.