Doing some digging (https://www.renderhub.com/driverua/ford-h-series-hdt-950-semi-truck-sleeper-cab-1961)and found the year as a 1961. The kit you bought represents the truck really well.
Mounts made to put tank on trailer, got the pallet made for the installation parts for the tank. The railing for the top of the tank arrived but the ladder and safety cage did not. This will hold up installing the fill tube, as the railing and ladder must be installed first. The strap kits are here as well
Giving thought to a good load for display on the trailer. Think I will build a plastic pellet storage silo. Managed to find a “G” scale ladder and ladder safety cage on EBay. Will use PVC tubing for silo housing and look for a funnel to match diameter. The rest will be Evergreen. Photo example
Fabrication work near complete, did not realize there are no jacks in this kit. Will need to fab up a set of jacks, do some finish work on the frame, pick up some wood strips for the deck.