The same bodyshell is used for all '63-'66 Valiant and Dart wagons. There are obvious differences in front end sheetmetal, taillight configurations, dashboards, and trim. There are also less obvious differences: the '63 doors don't fit '64-'66 cars and vice versa, the door locks are the same '63-'65 but different for '66, and of course there are mechanical differences as well.
The best ones come from
DMT. They don't list pre-'67 A-body items in their cattledogs, but not all their stuff is in the books and they happily expand their line when people send in old samples and/or tracings.
Both from Gary Goers. See
here. He also has the difficult-to-find hood-to-radiator-support and hood-to-cowl rubber seals, the correct door bumpers and door lock gaskets, and a whole bunch of other needed stuff.
Since you're working on a '66 wagon, you might want to see
this post, too.
