I think the FG VW bug body with full fenders is really cool, always wanted to have one. That and Exceed has a '48 chevy truck body they put on their Rampage clone that I really want but can't seem to find for sale separately from the truck.
MCD has a SC style body
http://www.largescalerc.com/mcdbaja1...bodyshell.aspx
Or if you want something really different MCD also has one of those Euro transporter van bodies. Its meant for onroad, but it could be cool, in a 1/5 scale "Lunchbox" kinda way!
http://www.largescalerc.com/mcdvwtra...bodyshell.aspx
Speaking of onroad theres a Nascar body for MCD/FG cars too.
http://www.largescalerc.com/StockCar...n-RoadCar.aspx