Camskill has General Grabbers for £145 each. If you can change to 285/50/20, shouldn't make much difference to rolling radius and can't imagine clearance issues on a truck, you can get Hankooks and Kumhos for as little as £109 or £120 respectively.
Try North Hants Tyres 01252 318666. They keep the Goodyear Wranglers in both blackwall and raised outline white letter along with Coopers, Generals and Hercules A/T. Coopers start from £125+VAT each.
after a bit of searching even in the US i dont think Goodyear they make these in the same spec anymore, the loadings on the old tyres are 114Y, you can get the size but not the spec (they are for a Ram 1500 crew cab)
