Fairly loaded but 90K? No. I wonder about some other things as the list of items is off a bit. It lists a 5.4L SOHC EFI V8 "Triton" and front/rear chrome bumpers
Who ever bought it never upgraded anything. It has the older solar controller and I'd bet the old Solara panels which might be delaminating. No winch, no Diesel water heater and no mention of a flat plate. I also didn't see anything listed about propane. 373 gears with a semi-float rear. No Starcool.
I'm thinking the original price new was probably around 100K-105K and the trailer added about 4-5K.
Looks clean though.