If the truck had the original running gear in it I would leave it alone, but it's got a non-running 350 in it now. The rest of the truck is original though.
My thoughts about doing this is that my wife has always loved these trucks, so buying a Corvette is not going to get her what she wants, and that's a Cameo that drives like a new car. I understand about keeping it stock as I have two cars that are totally stock, a 65 Mustang hipo fastback and a 67 Camaro SS vert, but they both have the original running gear with stamped vin on the engine blocks.
I like the idea of stock, but she wants to drive this thing everyday. If I only took it back to stock it would more than likely just sit in the shop and look pretty, but with the upgrades she would drive it. I respect the guys who say to keep it stock. If it had the original motor and transmission I would keep it stock, and find another one without the original running gear.