I have been building cars for years, and noticed that when I went shopping for either a pop top or a high top for my e350 extended I could not find many available. Which leads me to ask, if other people would like one. If I invest the time into making the mold, then it is reasonable to make a couple. I would sell for a reasonable price.
If your wondering what my plan is for our build, I am going to use the extended top as a hard top then evaluate how much work I want to put into building the pop top. So for now this would just be a kit for the fiberglass top.
DM me if your interested. The current design is an additional foot. Making it impossible to stand up completely, but possible to stand with a slight hunch.