I think it’s either a bait and switch or someone who has no knowledge of what they have. In N.C. you need a title to register a vehicle. Many times non titled vehicles sell for cheap for just that reason. The grills are worth the $100.
Wow what a tease. Guessing he had to many people interested and thought he really had something special.
For $5k, here's a much better looking '72 1st gen: https://sfbay.craigslist.org/sfc/pts/d/manteca-1972-toyota-hilux-truck/7464231445.html
