I've got one of the Revell 1/12 '57 Chevy's here that would probably be a starting point......either that, or that early 60's AMT '57 Chevy that had all the cool period speed and kustom parts left out of it on the most recent reissue.........still kinda hacked off about that one!
I've got a good idea what the van would need (just unwilling to cut up my last remaining A-Team van for it), but I've got no clue where to start on something that unrelated to a stock model body. That thing could end up like Chezoom, the vin number would be the only part left untouched!
It does Ed, as well as the old style grill/front bumper, mirrors, side trim (that probably hadn't been used since the early 80's), the cut marks for the raised roof, original wheels and hub caps, ect.
Honestly, I wouldn't mind if they left the newer parts from the A-Team van as well as the post '77 dash and wheel(s) and the grills that were never offered in styrene.