I'm in the rust belt so there is a fair amount of rust on mine, particularly on the back half of the frame rails. Nothing that would be a problem but you can tell it's been in the salt.

Hey, I just recently bought a converted ford E450 but and I looked under the bus and found a good amount of rust. Im no mechanic, but the really bad rust (chipping away) is on these cross beams that dont seem to be part of the frame. The rest of is just surface rust. Was yours rusty underneath when you bought yours?