JG, it looks like probably Passenger side quarter replaced...if you look carefully the weld is closest to drivers side but then it follows the seam to the passnger side, so that RH rear corner and most of the ribbed floor was sectioned in - also if you look at Ranch Hand latch it's crookedly installed. I see what you are saying on drivers side flare tho - appears whoever installed that flare angled it down to miss the gas cap and then trimmed the bottom.
So, they added a buy it now and someone bought it. 3-4 days on eBay. Super interesting. Broncoblood's recent 69 had more original paint, same color, LEGIT Stroppe rollbar (denver dealer install), and period flares and wheels, but again no Stroppe history and sold for 18500 or so last week or two on eBay. This is alot more, and for sure no Stroppe history. and 1/4 of the body replaced. and text that says "all body panels appear to be original." Not like we had the carpet or mat out to examine it at all! Just guessing.
Anyway, someone got them a new burgundy Bronco! Maybe they'll join the forum?