Update time. Chased leads that lead to dead ends, talked with
Rktpwrd, chased more leads, felt like there wasn't a great option so I walked away from it for a bit.
Eventually determined the best solution was to take a chance on the Wolf Steel panels and try to make them work. Ordered them a week or so ago and got them today.
Initial impressions... aren't great. They aren't rolled enough. The side of the body is curved and the panels are flat. The smaller patch isn't too awful bad, but the wheel arch is not great.
At any rate, I have them here, and I think they are workable. Still better than anything I could fab myself. Hopefully once I cut it down to size and get the old metal cut out, I'll be able to shape them a bit more to fit. Might not be able to do a super clean butt-weld patch, may have to lap them. Not a disaster because its all below the belt molding, so it won't be hard to mud it in.
Stay tuned.