As long as the seat of the nut is large enough to make full contact with the seat in the wheel, it should be fine. You'll want a 7/8" hex nut to get one large enough. Another solution (as 7/8" hex 1/2" thread nuts are kind of hard to find) would be to upgrade to the 9/16" studs and use the larger nuts. You should be able to swap in the studs for a 1 ton, which used the larger studs. If you can find 14mm studs with the correct knurl and shank, that could be another option, and it would allow you to use the late model lug nuts with the outside threads that will let you use the late model centercaps. Let me check my catalogs, I might be able to get you some part #s.
BTW, they are pressed.
