Solid Square Body Score? 1977 GMC Sierra Grande 15 Auction Find

This 1977 GMC Sierra Grande 15 was a solid truck that I spotted at the auction. It was a long bed square body with a 350 Chevy small block that had a few goodies installed. There were headers, edelbrock intake manifold and carburetor as well as an aluminum A6 replacement ac compressor. It even had fairly new exhaust. The only major issue I could see was the dent on the driver side of the bed. I think the winning bid was a good deal but what do you think? Winning bid at the end of the video.