Ask and you shall recieve! (Flip Top Gas cap Adapter)
Ok here is what I found with a little ebay looking!
70-74 Challenger Gas Cap------ WILL NOT WORK with this. Sorry guys.
68-70 Charger Gas Cap --------WILL work BUT has a different hole pattern that our 4 screw Abody filler necks.
Mine is a 67-69 Barracuda Cap. Because of this, it has the same 4 hole pattern.
On that note, remember I am sending these without the screw holes drilled in them so you can match your cap. Obviously, if you get a Charger cap you will have to drill new holes either in the base of the cap or in the filler neck.
If it were me I would drill into the cap, and then once again use my original screws to secure it.
Something else to keep in mind. It appears that the Charger Caps have a flatter base than the Barracuda. The Barracuda cap fits the curve of the quarter panel and has a slight concave to it. I have installed mine and you cant see any issues with it.
So depending on what car you have you may want to pick one or the other based on that too.
Please someone add to this if there is any distinguishing features on the Charger caps?
Oh and it appears that the 68-70 Charger caps have "FUEL" on them.
Hope this helps guys.