wiper transmission parts help
 

I'm hopefully about two weeks away from putting the cab on my 66 back together and I've been going through and finding all of the needed parts for the process. I seem to be missing the piece of the wiper transmission that connects to the wiper motor. I've looked online and can't find anyone that sells just the piece I need so I'm going to go look through the local salvage yards. What year trucks will work? Is it just the 60-66, or does the 67-72 use the same connector?

Or if anyone happens to have they want to part with...

Thanks for your help.