I think you can find a buyer at north of $40k, maybe north of $50k, but might have to be patient in the current toy buying market that seems to be really slowing down. It is a beautiful restomod.
Not sure what kind of seller you are, some folks (like myself), get emotionally attached to vehicles. Some folks just want things gone when they decide they are done. That usually plays a role in pricing. Maximize return, or just move on with life. If you don't want to be involved in the selling process, there is a member that does consignment for higher end 40 series if you don't want to fuss with potential buyers, and I would say this build certainly qualifies as higher end.
Land Cruiser Nation buy sell consign appraise vintage Toyota Land Cruiser FJ40 FJ45 FJ55 FJ60 FJ62 FJ Cruiser Ford Bronco Scout
www.lcnation.com
One bad data reference point is this terrible result (for the seller) of a highly modified & custom FJ45 from a BAT auction last year:
Bid for the chance to own a No Reserve: 1FZ-Powered 1964 Toyota Land Cruiser FJ45 Pickup at auction with Bring a Trailer, the home of the best vintage and classic cars online. Lot #135,813.
bringatrailer.com
I wouldn't be surprised it the seller had over $200k into the purchase & build of that truck. Buyer got a deal, but buyer pool for a build of that nature is so very tiny. Most folks spending that kind of coin want to curate the build process themselves.