Because of the December date is it a flat dashed 14 style or the new style body? From what I have gathered, depending on the location the car was first sold, they were still assembling the 14 style open body into early 1915. If it's a new style body then the hood former that Jack shows is the one you are looking for.
Here is a little more information that was posted on the MTFCI site;
http://modelt.org/discus/messages/2/38752.html?1340672410