1962 Gordie Noserider Fin Template

I recently inherited a 1962 Gordie Noserider form my Uncle.  The board needs some work and I am planning on restoring it to it's original glory.  My uncle and his friend decided long ago to remove the orignal wood fin (ouch) and replace it with a fin box.    Needless to say, he lost the original wood fin somewhere along the rode.  I have come across a few images of the original fin, which appears to be someting like a  D-fin with a flatten top.  I can't find a template out there anywhere for the fin.  One of my main goals is remove the fin box, foil out a new wood fin and glass it on the board during the restoration process.  Does anyone out there have a template for this fin or know where I can track one down?  Any help would be greatly appreciated.  I have included a few shots fo the board.  The blue and yellow boards are two 1978 Gordies that I inherited at teh same time.  I am planning on restoring these as well once i finish the noserider.