Mine was bad to about halfway up the body plug hole. I was surprised at how well a patch piece butt welded in turned out. The shape is intimidating, but it actually was pretty easy. I used a vice and hammer to bend the lip on the bottom, put a split in it where the hole is and started bending by hand and tweaking with hammer and vice. Test fit with the outer cab corner until it was right, butt weld on, use a dremel w/cutoff wheel to make the hole. The repair was almost invisible. If you do have to replace it I think it would be very easy, though. Once you cut off the outer there aren't many spot welds left (depending on how high up you cut your outer corner off). Drill a few remaining spot welds and its off. Drill a few holes and plug weld the new one on. Of course fit with the new outer and screw it in place before welding. If you haven't started this job yet I'd be surprised if this is the part that causes you trouble.
1
