WTB pushbutton shifter assy. 1962 lancer

i found the missing (n) button laying in the bottom of the dash after i got the assy. out. the reason the button fell out is that the metal fork that holds it has the bottom fork broken off. thus i am looking for a replacement shifter assy. if worse comes to worse, i could probably take it apart, and make a new shifter lever and fork, but there are a lot of parts inside that thing. i am told that they changed the shifter assy for 62, but that valiant one sure looks very similar except the front bracked.
anyways. need to know the interchangability of the shifter assy's.