Leave 'em!
Leave 'em on!!! I think those are kick ass emblems! If I had a V8 in my truck I'd be looking for something like that.
I actually ADDED badges to my truck. I went to a Ford dealer down here and told them I had a 2000 Explorer, and I needed 2 sets of the 'XLT' badge from the trunk, and they gave em to me, and I put them on the door panels, and then I ordered two Ford logos (small ones) and put them above the XLT badges, so it says Ford XLT on my doors now....
So to end.... leave em, they rule!