How much is this 66 worth?

6 cyliner car that does not include drive train? (You said that all it included is what is pictured and I saw no motor). Front floors look questionable even after being patched; probably a rusted out cowl. Holes in the shock towers to access the grease zerks (hate it when they do that!)

What are you doing with the car? Changing to V-8 or leaving 6 cyl.? If to V-8 lots more work and $$$$. Just by the pics no more then $500
 
Definately lots of work to finish this car, but seems like a worthy candidate if you currently have a bange up or rotted coupe since you could swap everything over. Otherwise I think you will spend a lot of time and $$ hunting down parts to finish this car. All the dinky interior items start to add up quick... So it really depends on what your plans are in terms of the value to place on this car. a coupe shell that will need to have body and paint work isn't worth too much in my opinion.