But that R/T still isn't the purple one you see on the top of the first pic of the T/A. Unless the photos were playing with our eyes and that actually WAS the green R/T! You can see that both R/T (green and the purple) has a similarly colored right door (red or orange) so it might be the same car.
I wonder if the T/A doors were mix and matched with any of the R/T's? I see a purple door on the T/A, a red door on the R/T. I'd insist on taking the originals if I were taking any of them home.
As for the feasibility of buying, that R/T.....too far gone. There's just something about a hit of that type that renders a car 'off balance', and it is never the same. A friend of mine had a '67 Camaro that was restored even after it had frame repair, and it came to haunt him. The car was veering all over the road at freeway speeds. NOT FUN at all.
You'd be better getting a solid and straight platform for the price this dude's asking. I'd take a solid '72-'74 over any basket case '70-'71.