Need help to identify years

Are there plans for a /6 version '64 Dart radiator in the works? Mine is shot and I wanted to order one really bad. Could you guys do a "custom" build based on my specs? I'm sure there are more than a few guys on here who would order one if you made them. Hell, I'll haul mine down to you if necessary. Tired of re-brazing my upper tank just to have it leak again 3 months later.