Hi, I am new to the forum. I have a '73 convertible with sport mirrors. The passenger side mirror assembly and mirror itself fell out of the casing while on a drive and could not be found. I have a replacement mirror but need the actual interior assembly to glue the mirror to and then reinstall into the housing. NPD is out of stock and I have not been able to find the assembly anywhere else. Would anyone know where to find this interior assembly piece? Many thanks!!!