I'm helping a guy install new lights in his 2011 Silverado. He originally was only going to need 2 toggle switches but a change of plans has necessitated a switchbox. The only catch is that he already has 2 holes drilled in his lower dash. Besides just leaving the switches in place or replacing the dash, what can we do to cover the holes? He's very concerned with looks so it should fit flush with the surface of the dash.