Getting an early start, got the panel welded in. I drilled 1/4 inch holes in the panel, clamped in place and made nice little circles. LOVE the Miller 135. I used a 4.5/60 combo. Welds aren't beautiful, especially with some paint contamination, but they are plenty strong.
After tacking into the light housings and corner seams, I expoxied all visible seams. This system is a flexible expoxy similar to that used to bond on flares, etc.
Next I velcroed on the rear lens, one I picked up here on Pelican classifieds. All the nubs on the back side had been broken off, but 3 pieces of velcro and it should be fine in the short term. Long term I'll repair properly with nubs I pulled off my broken lens.
Finished after working on the decklid. Notice the line of silver/crease in the bottom of lid... someday I'll get that cleaned up with a little filler, probably when I paint this winter.