Honestly, I would buy a white 1994 Ford Taurus station wagon, like so:
http://www.carfinder.com/detail.php?sVIN=1FALP57U8RG132299
… and spend the rest of the money on getting custom vinyl stickers made for the sides. Most shops don't really give a crap about copywriting graphics (i.e. those stupid-ass bootleg Calvin weeing on a Ford logo stickers you see on rusting Chevy Blazers, y'know the type). Like so:
http://www.customvinyldecalsnstickers.com/car_truck_stickers_decals.html
All in all, that should run about 3 grand.