I looked at my dads FX4 truck last night and his 06 has the same rims as your FX4 has. the polished rims must have been optional or something.

 

Ya there are a few different style polished rims that you can get, mine are the most basic and then ones with like cutouts on the tips which I believe are 18s mine are 17s and believe one more. But my rims are stock from the factory

 

nice I did the same thing with the FX4 decals except I went with flat black

 

Nice, mine are from ford, if i did it again id have someone make them. The ford ones suck they rip very very easy