Are you talking about the "shifter slider" that goes around the shifter and blocks the view of the tunnel underneath?

If so, I just bought one right here:

http://www.yearone.com/serverfiles/part.asp?pid=RU1380&c=0&e=0&cat=4&hid=411AI49949

Its listed as a "2 speed AT" plate, but that is mislabled. All the 67 AT plates were the same. I bought it for my 3 speed and it fits perfectly and works fine. You do need to have the slider retention brackets attached to the underside of your shift console though. I can go take photos if you need them. The retention brackets are sold online as well if you dont have them.