Thats not such a big deal at all... I would start by cutting out the skin about twice the size of the damaged area so you can get in there and clean and prep the inner surfaces that are rusted (with Ospho and a wire wheel) epoxy up the inside and then make a piece for the outter skin and weld it in ,Its actually a lot of fun..making patches and welding them is about the most enjoyable part of any resto job. You'll need a few basic tools and a good air supply to get started but you can do it without to much trouble or spending a ton of money.
It looks like the drip rail molding is already off the next step will be to remove the molding from the windshield and rear glass theres an inexpensive tool made for that you'll need dont try anything else you'll ruin the chrome. You can start there .dont take any chances with the chrome if its giving you trouble just ask and well explain how to get it off properly.
Last edited by deadbodyman; 10-04-2012 at 08:15 AM.