Well we did it. A 2011 F350, KR, 4x4, 6.7L PSD, Crew Cab, 60,000 km is sitting in the driveway. Won't fit in the garage unfortunately. Will send pictures once the blizzard outside lets up.
Thanks to the tips received here and on a few other forums I was armed with my notebook filled with questions and things to look for. Didn't get them down in price cause we almost got caught in a bidding war with another interested buyer. Based on other trucks listed for sale, but located 7-8 hrs away, the truck seemed to be priced competitively. Checked Kelly Blue Book prices and this one was priced in the range for a clean truck and keeping in mind Kelly's prices are US$ I think we did ok. Original build sheet shows sticker price of $85k with a long list of options so $48k seems, choke, reasonable! Has new 20" Michelins, would have preferred 18" for ride quality and replacement cost but they sure look good. Has a PTC Supplemental Heater, not sure what that does but have a ton of manuals to read. Has a steel cable mounted in the box to tie down loads, FX4 off road, buckets, moon roof, nav, PTO provision, dual alt, roof clearance lights, heavy duty service suspension, factory remote start, and of course it's the new diesel.
It has the 5th wheel hitch prep package so will be researching Reece and B&W hitch options. We have the short box so not sure if a slider is available or will be required for whatever 5th wheel we end up with.
Got the Car Fax and Oasis reports plus the required Manitoba Safety Cert. There was some comments about wear on the front tires and the reports show work done 2 weeks ago on the front end (steering linkage, drag link, tie rods, ends) which was required to pass the Safety. Thus the new rubber all around. The kicker on the deal was the Ford Premium Care ESP which is good for another 4 yrs and another 90,000 km. this seems to cover almost everything with $0. Deductible. Thanks to the original owner for purchasing this and the fact it is fully transferable.
The interior of the King Ranch was in great condition. A few wear marks on the drivers seat and centre arm rest but was otherwise pristine. Don't think the back seat was ever used.
The exterior had a few small stone chips and tail gate has a rub mark on the exterior but the rest looks like new. The box is a bit banged up but plan on a LineX bedliner and tonneau cover eventually so that will cover it up nicely.
There is 970 hrs, 230 idle hours on the engine and the engine bay and underside is clean with no obvious leaks, even after the test drive. Weighed the truck on the trip home and it came in at about 8000lbs so after adding about 500# for hitch! DW, Dog, etc that leaves about 3000# for payload. GVWR 11,500#. The motor is so quiet and ride so smooth as compared to our previous 2008 Ram 2500. The truck bucks a bit on a rough road but certainly more than acceptable given the size of the truck. The creature comforts inside are impressive.
So we are set for the TV, now to get my drivers license upgrade, shop for hitch and upgrade 5er and we will be able to drive off into our retirement lifestyle.