The "Original", or "regular" foil seems to work as far as adhesion goes. Perhaps a little NOVUS 3 stage polish right to the film, still on the backer sheet would bring out the shine even more so than regular foil? Likewise, for aluminum, a super fine grit steel wool to the film still on the backer sheet. Perhaps Dullcote sprayed. For Matt black, steel wool chrome, then spray with matt black spray.
Personally, I think the entire operation, kept whole, is just too much of an endeavor for one person (or even a couple) to take over. Unless they have experience doing the same thing, under the same circumstances. I doubt anyone out there can step up to that plate. The best thing for the Modelhaus, is to see it divided into categories. Such as, parts. Another category would be complete kits. Maybe another for wheels and tires. Whatever would work. Because the alternative is, bye-bye. No more resto parts. And maybe that will happen? Maybe as they start winding down and finishing their order fulfillment, they can optimize a plan for the inventory? It would be a shame to see it go nowhere. In their case, part of retirement planning, is to sell off the assets. So again, a big "Thank You" to Don & Carol. Sure gonna miss them.
Wheelbase: 124” or 138” Overall length: 186.8” (124” wb), 206.8” (138” wb) Overall width: 70.3” There's the numbers. Figure out the diff in wheelbase for 1/25" scale. Here is a side shot. Print it out in 1/25" scale, use as a template. Hope this helps. Let us know how it goes.
Your photo shows the mid length Econoline. I need one, too! It will take two kits. Use the rear doors from the second kit to make the side doors, I haven't figured out yet where to cut and section the two bodies for a longer wheelbase.
It does indeed appear to be flat spotted. Good thing I am a model builder, and can fix this with a minimal amount of filler on the roof. Then I'll use some sanding sticks to get the right shape. Won't be too thick. It's just plastic.