thanks Sam for the input. I have only seen the same pics as you so far. There is a repaint that has been described as needing a buff and/or wet sand. Not sure about the underhood detail, but a link above shows another Buick with similarly painted engine and brackets. I do not know if that is correct.
I also assumed the car was not a 2x4 because of only one wingnut and the look of the intake manifold. I am not a Buick guy, but someone has said this IS a 2x4 by looking at the pics.
I wouldn't go as far as giving this car a number without seeing it in person and documenting the mileage claim. I am planning to get there today if the rain lets up.