Settle down all, OEM was being sarcastic ( I hope), you can build yours however you wish, we here applaud that wheather it is our personal taste or not. all we are trying to say is maybe a different cab would be a better fix for your rust issues on yours. depending on how bad it is. If the rust is real bad especially above the WS, then a cab is your fastest and cheapest alternative.
Those that are in Cali and the far southwest dont have the issues we all have on the Eastern 4/5ths of the nation.
Here is one, kind of far but I would ask if cab only is available...
http://dallas.craigslist.org/dal/pts/2717224146.html