66 Cuda Neutral safety switch
I just looked at the 66 parts manual. The part number 2586 994 for all lines are updated to switch 3004087. This covers dart, Valiant, Belevdere, cornett, fury, polara, chrysler, Imperial in 66.
here is another (same part number) with an exploding picture.
http://www.ebay.com/itm/Automatic-t...2495537-2586994-3004087-1965-68-/330895738188
The first one was a lot cheaper though.
64 manual 1704 283
65 manual 2495 537
67 manual 2586 994