The shape of the 'kink' in the forward, upper surface of the doors is, I believe distinctive and unique to the Classic Roadsters / CRII bodies. Excalibur Cobras don't have that 'kink' in the doors.
I stand to be corrected, but I believe this is a CR / CRII car.
Full size photos can be seen here:
http://www.ebay.com/itm/131553629248