Neat looking car! I hope they throw in the steering wheel cover. :D
Seriously though, they never made a bad A-Body. Even the most base model /6 cars were great for what they were. This being a Dart Sport automatically makes it cool, IMO. I also happen to love the dark brown/tan combination. It's very period-correct.
So yeah, it's almost certainly a 7.25" axle car which, if you were to drop in the 5.9, wouldn't be a good match but that also doesn't mean that it has to be replaced right away. I drove my Dart Sport with the 5.9 Magnum for somewhere around 1000 miles on the 7.25... just knew that I couldn't hammer on it at all but it will work for gentle driving. My dad filmed the biggest “burn out” I ever did with the 7.25”. Yeah it was pretty intense but the 7.25 held up.
:D
If the price is fair and the body is solid, I wouldn't hesitate on this one. If you don't want it, share the location with the forum as I suspect someone would gladly snatch this up.
As for the brakes, in the unlikely event that this has front drum brakes, you'll definitely want to budget for upgrading those pretty early on if you plan on hotrodding around at all.
