Mopar A-Body Dart Valiant Duster A-body flip top gas cap adapter

Hi Damraider,
I'm told that you make an adaptor that would work on my 73 Dart Swinger, to install a flip gas cap. If you do, how much do you charge? and what model of flip-open gas cap should I use?
Hello, yes still selling them. They are 41.50 shipped now. I believe all the flip tops work but most use 67 to 69 charger. Shoot me a private message and I will send you my PayPal address for payment. Thanks again, Steve