Much as I dislike to say it, the demand for rubber gaskets for glass for 30 or more year old Dodge trucks probably isn't a very high demand. I suspect there is probably only one, or maybe 2 choices and everyone sells the same stuff. The cost effectiveness of companies manufacturing limited quantities of specific items is simply not there.

We likely are going to be hearing more and more of this sort of thing. It is probably a idea these days to ask the company if they are manufacturing the parts themselves or if they are selling someone else's product. If they are not making the part themselves, and several suppliers are selling the same product, we may well be to the point of simply buying the lowest cost specific item we can find.

Its been the consistent story with parts for older Mopars for years. One company is producing the part, everyone else is selling the same part. Might as well buy it for whom ever gives you the best price, has the product in stock, or can deliver it in the most cost effective and fastest time frame..