I have seen Model-A replacement distributors with the flip-door oiler but do not believe they were a Ford product. I have a new in the box version sold by Western Auto back in the day. They basically replaced the spring-loaded pull type oiler with a flip-door oiler as was used on the generators. Oiling these is a bit messier but with a syringe you can fill up the shaft and bushing area with a pretty good shot of oil.