I don't have a copy at hand of the most recent photos he provided of the black GT, but I recall A pillars that were almost gone, a C pillar and rear window surround that was shredded, and given a rusty floor pan and trunk floor, could the sills be much good either and everything that attaches to them? You don't recall seeing any damage in those areas? Have you actually done frame related repair or rust repair? The problem with rusty cars is that you never realize how much hidden rust is present until you start fixing all the visible stuff. Then it becomes a nightmare as you dig deeper. With the stub frame bent as badly as I recall, maybe you couldn't easily see the bent cowl, but there is some real damage in that area for sure. Unless you have a body guy that you completely trust to do everything as best he can in every case, how many guys can really put up with all that tedious repair and not take some shortcuts - and then those show up a couple years later? The really trustworthy rust repair guys are few and far between but even then their repairs might not hold up either. And there is no way to seal behind some of the welded areas so that moisture collection in those areas is also a concern, and with bondo to cover the repairs, just a slight pinhole will lead to bubbling.
I still wonder how excited I would feel at seeing one of these cars restored at a car show when I know that there is a patchwork quilt of a body present and not even the original engine is there either? And how much would the owner have to keep fixing down the road - how satisfying would that be to him after spending a ton of money for all the repairs in the first place? In the end, anyone at a car show with knowledge of the background of one of these cars would look at it as a recreation of a past dream, with so much of the original metal and drivetrain long gone. But maybe it is worth it to some...............................