I've had the idea in my head for a while that you could use a 63'-66' Valiant/Dart wagon as a base which is probably what the factory did to make the Ute down under. You'd cut out everything from behind the B pillar and voila, Valiant Ute. I don't like the way the "cab" was treated for those though, seems like an afterthought so my other idea was to find/use the curved rear section of an A100 truck cab and somehow graft it on behind the pillar. An A100 is an "A" body after all.