Do I need a 904 trans that is specifically built for my 1961 170 ci slant six?

I'm not positive but the 61 and 62 are their own animal when it comes to parts. Is it push button operated? If not then you should be able to use one up to 67 from any slant car. I'm really not up on the early 60's stuff.
Thanks for the help. It is push button.