How about a WIW??

I have been trying to get a guy to sell a 66 Dart for about two years now, not sure what it is may be a "D" Dart....it's a white 66 GT with red interior. It has the original 273 4bbl, 4spd..it's all there but it is rough...needs everything redone...even the glass, windshield and rear window have fogged.
Is there any way to tell if this is a D Dart? I personally don't think it's worth the $1000.00 he wants for it, in parts maybe, unless it's something special.