Here's something I did to dress up the lower grill without having to take the bumpers apart and spending a bunch of $$.
http://www.tundrasolutions.com/photo...8156&nocache=1
Hope the pic link works.
Anyway, I just removed the license plate, and applied 2" aluminum tape across the lower grill twice, over lapping in the middle. Rubbed it onto the surfaces of the originally black grill to make sure it would stick good. Then, took a sharp Exacto knife and cut out the open spaces of the grill. Leaving the the grill looking like it was chromed. Up real close you can tell, but 5 ft or more, you can't tell.
Been on now for about a month, with none of it coming lose.