Wanted info on trans swap on a 292 v8 from a 3-speed to auto

[hotrodben]

I want to switch the trans in a 63 ford f100 from the three speed to a automatic Im looking for info on the swap and whats a good fit and what is needed to make it work. Any information would be very helpful.
Thanks

[Harryw1023]

I have a 55 automatic if that helps, Harry