Sorry I completely missed this thread while on hiatus.
I have no complaints with the tires. I miss having four wheel drive and just generally driving the truck after tearing up the front end. The KL71's have to be the best mud tire that I've ever bought for any of my trucks. I had no complaints with my regular Kumho M/T's on my old '79 F-150 so I felt pretty confident buying them especially after reading up on them. I'd say they're worth every penny so far. I'm definitely wanting to rotate the fronts to the back(they're directional tires) and get em in some snow though =]
Side story......I decided to blow some dust off the girl and put her to work today. My buddy moved his trailer/mobile home from a trailer/mobile home park onto some land he bought and needed help removing the detached shed. I put the girl in 4lo(2lo with no diff, front driveshaft, cv's, or shafts) with my 30k lb strap hooked to the shed and the rear locked and the tires held awesome on the concrete and pavement. I had to air down to 20psi but they held with no weight in the bed. I love those tires, look mean too.