look on top for a welsh plug... looks like a "freeze plug"... should be a serial number stamped in it...if not there ya gonna need ta put up some pictures...there will be a "build date" stamped at tha base of number 2 cylinder (top, port cyl.) on tha block half kinda behind tha bend in tha advance timin' arm... wil ne m/d/yr in 1/8 in. numbers....
