That is Sweet! A mobile shop! Crestline has done lots of custom things like that in the past. You provide the van and the rough plans and they do the rest. They likely would still do it. If not, the guy that did most of their one-off custom stuff has retired but I can still get hold of him. Over the years he built himself a late 80's Suburban Limo and a working hovercraft (amongst other things). If he still has the Limo, that would make a sweet toy hauler!