Cruising the old VW forums, which I do for nostalgia's sake, I came across this reference:
Looked them up and really liked what I saw. They only advertise as VW van suppliers but I thought the range was broad enough that they might have something that could worked for an RB Ford. So, I called.
Turns out they are an English couple who had a business in the UK doing complete van interiors and decided to move to the states. They have only been here 6 weeks and are still settling in but clearly they make nice very interiors. They had no idea about the size of the van market other than VW's but are willing to look at it. Prices are reasonable, they use plywood and good quality fittings and the end product looks integrated and factory fit.
I'm going to send them my floor measurements and see if they can come up with something for me. And no, I am in no way affiliated with them, just got excited to find a great looking alternative to what's out there now.