Unscrew the inner door panel and clean out as much rust as you can get to. Use some Eastwood rust conversion for now. Grumpy's truck parts has patch panels for the inner and outer bottoms of the doors. They carry decent patch panels, I've used the ones they have for front fenders and haven't had issues. Here's the link for their inner door patch panel: http://www.grumpystruckparts.com/item335117.ctlg

Last edited by 5wests; 05/11/2012 12:04 AM. Reason: that is for left door (driver side)