I was looking on-line to see if anyone ever made a first generation Chevy Van into a pick up. Didn't find anything but found this old for sale ad of a 3rd (?) generation van someone did.
http://www.theelectricgarage.com/auctions/vehicle_details.php?auction_id=42&id=3678
http://www.theelectricgarage.com/auctions/vehicle_details.php?auction_id=42&id=3678