All done with the mold for the top. It doesn't look like much progress but I am happy with it. I really like the new profile and how it sits. I think it will look nice on top of the truck. I was originally planning to add some ribs to the top to add some strength but I decided to have a clean top profile. This should make it a little easier to clear snow off of the roof in winter. There will be plenty of structure on the bottom that will more than account for the loss of any structural profile up top.
I finished up the lift arm prototype with the proper materials, struts, and hardware. They work really well. I ended up getting a 32" lift out of them, meaning my side walls will be 32" tall. I don't have my measurements handy but if I recall correctly I have 46" of height between the floor and the existing roof with no insulation, carpet, or headliner. To get 6' standing height (I'm short and don't need more than that) I need 26" more. Add in 1" for floor insulation and carpet, and another 1" for headliner and roof insulation and I need 28" at a minimum. Initial plans led me to a 30" rise but the extra 2" will be nice to have and I don't think it will change the proportions too much. I didn't want to go too tall with it because it looks odd when deployed but 30" is pretty minimum for height in an Excursion if you want to stand. This should give standing height for anyone up to 6'. If I need to go taller, it is very easy to add length to the lift arms without changing anything.
Right now I am waiting on the rest of the material for the lift arms and waiting on my welder to finish up his real work so that we can weld up the frame. Still looking like the original estimate of two weeks is about right. I'm having a hard time waiting. All CAD is done and up to date so it is just a matter of getting the metalwork finished.
The only thing I can do right now is lay the top layer of fiberglass. I might do it this weekend if I have time but there isn't too much of a rush since I can't do anything else. There is some aluminum work embedded into the bottom of the fiberglass roof so I can't finish it even if I did start it.
The only picture I took: