Push Button - need "Park" spring

Had a problem with getting my '64 dart with a 904 out of Park a while ago. after somemtrouble shooting I discovered that the spring on the lever under the dash had broken and jambed the lever. works fine without the spring....but.

Where can I find the spring that goes between the Park lever and the push button housing? Any NOS or Repros out there?

Thanks, N B D