[66AC]

I do not have a slow fuel fill issue with #375. My car does not have the removable gas cap, rather, the LeMans aluminum cap (which hinges open) has a gasket which closes and seals the gas. The early LeMans caps have a bit of a larger orafice. But when the tank is near full I can get a blurp as the filler clicks off. Seems however like your visual mirror is a neat solution. I wonder if the original 427 Cobras had/have a slow fill issue?? Probably so few originals ever see the street any more.... we may never know.