I was under my '01 F-350 changing the fuel pump and road salt is taking its toll on the cab. I think it will eventually be easier to change the cab rather than try to repair the rust damage so I was wondering what years production the cab will interchange with mine? It's a 2 door regular cab, 4x4 auto with manual 4x4. This isn't an urgent need but I want to keep my eyes open for a bargain. Thanks!