Here is a link previously posted by Ed from Hemmings and that link leads to the auction. The featured truck was a longbed with the Sport trim and a great video link. I’m sure you saw it GMCNUT.
That auction link had many numerous parts like a GMC V-6 crate engine and a pair of 351E exhaust manifolds and hubcaps and other parts.
https://www.bidfastandlast.com/auctions/detail/bw77796
Among those photos was this intake manifold I’ve not seen but only read about. Looks to be a Magnum Factory Four barrel and must be ultra rare.