Seat itself are all the same I believe. Tracks can vary some from year to year but I strongly believe any '63-'66 split bench seat assembly w/tracks will bolt in and function well.
Bench seats for 63-66 should be the same. Only difference would be inner tracks on 66 bucket seats because of the full length console
for that year. Outer tracks on buckets would be the same as bench seats for 63-66.
