When restoring my 65, both doors got new skins and required minimal alteration or work done to them. I have been a auto body worker since the days these were everyday cars and these skins are the way to go
Dynacorn's driver's side door skin fit my door almost perfectly. It only required trimming in one small spot about 3 inches long.
Take your time and work the metal slowly. Don't try to bend the flanges all the way over the first time around the door. I go around the door 4 or 5 times bending the flanges about 15 or 20 degrees at a time. I got very good results with very little body work needed.