I LOVED those tires. At least the Fun Country Radial tires, I bet I had 5-6 sets of them over a 24 year period. They rolled like street tires and did not howl at all and..........I could get 50,000 miles out of them.
My size was 36/15.50/15 and were on a 1973 Chevy 4x4 3/4 ton that I ground back front calipers to squeeze on the 15" wheels. I am pretty sure one set was 36/16.50/15 back when you could get lots of fatty daddy W I D E tires Dick Cepek, Mickey Thompson, Ground Hawgs and many more big tire makers.
I never tried the newer generation Fun Country II tires. Sold my truck and raised kids for 15 years before coming back to the big truck thing.
I must admit I was Shocked to find all the nice wide tires were gone. I run Toyo M/T tires today in 38/15.50/18 but I would be much happier with 36" tires. But I can't live with only a 12" wide tire so 38" it is.............
Ok I'm done blabbering on your thread, I wish you all the luck in finding a set of them. You might try Summit Racing, they have some pretty big warehouses in Southern California you never know. They had a Pro Comp wheel on the shelf for over 7 years......thank god.
Another place to watch is eBay.
If not I must say the Toyo M/T is a very nice and long lasting tire. They also have a R/T line now but biggest one is 37/13.50/20 but they do sport a 65,000 warranty
Good Luck Bud.........