I would probably do it up to look like those old town ambulances, like what you see in the old movies. Just place an old bubble-gum light on the top front an centre, and place some school-bus lights on the front and back... Oh, that'll be the hit of the car-show
Again I'd love to have one and do the interior a la 70's custom van wide screen T.V plush carpet and seating and a killer steroeo system pun completely intended :>O