That is a whole lot of truck for the money! In many ways it is comparable to Big Blue, and I wouldn't part with him for anything near that little.
I think it is an original dual-battery setup or it wouldn't have the coolant recovery reservoir in the right location with the right bracket. But, that looks like a Bricknose reservoir, not a Bullnose. And he's rewired between the batteries with a massive cable across the top of the radiator support - unless that's for the winch, which it might be as there's a knife switch on that cable.
It has what looks to be a vacuum gauge under the dash. And he's somehow gotten a radio of some kind, perhaps the Ham or CB, above the standard radio spot. And air horns with a compressor mounted in the bed. And, it has a tach. And a matching bed topper.
Overall it is better shape than Big Blue, probably because it is a CA truck. And, he has the sun shades that may have helped a bunch on the UV exposure to the interior. If someone wants a truck like that then this one has to be a serious contender.
Gary, AKA "Gary fellow":
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Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI