im trying to get the rockstar dually wheels for my f-350 dually. problem is, i keep getting told they have 2 different patters for the 06 350's. i even called ford with my vin and they couldnt tell me. i know from stud to stud across it is 7-7/8 and inside the factory wheel it is 5-5/8. i have the 17" facotry alloy wheels. so does anyone know or have ran into this problem before? do i have the 8x170 or the 8x200? thanks!