Another alternative if the rust is under the car is to patch with sheet metal, screws and black goo. The main structural parts of these benzes don't tend to rust away, so cheap fixes can keep you on the road for years.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.