Re: Power seat
I put power Driver and Passenger seat bases out of a 1966 TBIRD into my 1964 Galaxie. I had to adjust the mounts to fit the Galaxie floor but I believe all the other parts, base, motor, relays and switches for the Thunderbird are exactly the same as a Galaxie. (note the 1966 Thunderbird is a 6 way not a 4 way as previous years).
Search for a 1964 Thunderbird Power seat switch as those are reproduced and readily avail.
Here's a pic of the switch itself. Hope this helps (again not 100% certain but think I am right).
64 2dr Galaxie 500
65 Mustang Fastback 408/4spd
69 F100 SWB 406/4spd