Tim Wescott wrote:


Steel can be painted or galvanized to not rust, and works pretty darn
well for frames.

The original spec for Land Rover (British version of Jeep) frames was to
make them in steel and galvanize. They didn't do that in production, but
a version for the Australian army called the Perentie did.
http://www.allisons.org/ll/4/LandRover/Perentie/
The chasses were welded up from rectangular section steel, looking
something like a home built.
Don't Jeep frames need to flex somewhat? I saw a bare one sitting on a
garage floor. The owner picked up one corner, and the other three
corners stayed on the floor!

Jordan