Thanks guys. I got my adapter for my flip top gas cap today but it's pretty much a solid spacer. I guess I'm supposed to drill holes into this as the instructions were just a picture.
that seems kinda skimpy on the companies part to charge 45 big ones and then you still have to drill it.
when I did mine I cut where the reliefs need to be into the 1/4 with a cutoff wheel then pounded it in to clear the cap and welded the cutout area to seal the 1/4......if that makes any sense. That way the cap is a bit more flush looking like on a cuda.