I don't know much about these things, but this is a Centurian conversion isn't it? (With all the wood inside?).
Body looks to be nice and straight on it. I don't know the market for these things, but $4950 seems like a decent deal for what it is.
https://knoxville.craigslist.org/ctd/d/knoxville-1986-ford-f350-crew-cab/6806001232.html
1994 F150 4x2 Flareside. 5.0 w/MAF, 4R70W, stock.
1984 F150 4X2 Flareside. Mild 302 w/ 5spd. Sold.
1980 F150 4X4 Flareside. 300i6 w/ 5spd. Sold in 2021.
1980 F100 4X2 Flareside. 351w/2bbl w/NP435. Sold in 1995