You wouldn't want to do that. People would see your nuts. Lug nuts that is...plus, your ole rusty hub would be showing too. It definitely doesn't look right without the center cap.
05 WK 4.7 QTII: Pinch weld...1.5" Spidertrax...Mesh Grill...OME HD...265/70R17 Goodyear Wrangler Silent Armors
07 JK Sahara: 2" RC Spacer Lift...33x12.50 BFG A/T KO's...Black Mesh Grill