I do not know about the 07's, but the 06's are SAE. Triton, those wheels the tow truck guy had might have been for a 99+ Ford instead. That would be why they didn't work. 99+ ford is 8x170mm. A friend of mine ran a set of aftermarket wheels on his 06 Mega-Cab last year at lafayette, TN that came off of a 2nd gen. I also know of a few guys that swapped thier aftermarket wheels from thier 2nd gens to the 3rd gens when they traded the trucks in.