they finally are making these ! they are pricy but maybe after they sell some they will come down in price , eckler's has these and they are reproduced for the 67 corvette , eckler's don't seem to have made the connection that the 67 camaro front window crank's GM part #5719477 and the 1967 corvette window crank part #5719477 is the same :D

http://www.ecklers.com/product.asp?pf_id=52000&dept_id=1666

http://i394.photobucket.com/albums/pp27/RS3SDL2MG/1967%20c10%20shortbed%20fleetside/67bluewindowcrank.jpg