 Mark Levin. Mark Levin on 104.3 FM, KSLM. David Withnell, Withnell Motor Company in Salem. Look all you want, but you won't find a good used car. But you can build one. Decent mileage, good condition? Okay, then it has to be built over. Mechanically, electrically, computers, bodywork, paintwork, all the goodies it left the showroom floor with.