Patches from Classic Enterprises. Important inexpensive tools I used all from Harbor Freight: Air metal shear Air punch/flange tool 240 volt Mig Welder I would add two comments to the fender patch video. 1) On my next ones I sheet metal screw a temporary lateral angle iron straightener between the patch and fender until the joint is welded up. Without this the Bondo on the patches in the video was deeper than I would desire. 2) The rubber spacer between fender and firewall like SI offers is important as it provides 1/4" more clearance for the door opening without binding.   Video