I was looking around eBay for some new 1/4's and found there are new pieces for your rusty areas where the smugglers box panel attaches. They are also making new inner 1/4 panels and full bed sections. Pretty cool....Saves me time from fabricating new ones

http://i6.ebayimg.com/05/i/000/8d/7e/abf2_1_sbl.JPG

http://i1.ebayimg.com/06/i/000/8d/7e/969e_1_sbl.JPG