'72 GMC Sprint eBay Link
Here's a sweet little stock truck in excellent original condition! It wears its original paint scheme with one claimed repaint, a very nice looking original interior, and a clean engine bay. The underbody could use some refreshing, but overall what an excellent driver! Available for sale from the original owner too.
You never see them in this configuration, I'd keep that straight 6 in there and use it as a parts truck.
I also looked up the car on the dealer's website...I think they're asking for top dollar and then some, but I'd love to have it in my garage!
'72 GMC Sprint Dealer Link