Early A dual master recommendation?

TAK65 said
Hi all,
as my 63 Dart seems to need a brake overhaul, decided to upgrade the master cylinder too. The subject probably been beaten to death already but I can't seem to find a definite answer which one to choose, so somebody please chime in.
As my car is and will be registered as a "classic vehicle", here in Spain they are kinda strict about any upgrades, regardless their necessity. So I will have to stick with the original 9" drum brakes, non power assisted. I would like to have the new master appear as close to stock as possible, with minimal modifications needed and hope nobody will notice. Have a single cylinder in now, not original but looks like one.
So I need a 1967 master cyl then? Or are the 68, 69, 70 and so on identical? I remember reading in some thread that a 1971 and up would be somewhat better, is that so?Looking at ebay ads, they all look the same but perhaps in reality they're not?

67 drum brake master with the 67 -72 metering block will be as close to factory as you can get. It will look correct and work exactly the way it is supposed to work. I used this set up when I restored my 65 Barracuda back in the 1990's It's a bolt in job with no modification at all .You are only adding a metering block and an additional line to feed the rear brakes from the new master to that new metering block that gets bolter on to the frame rail where the old single block is now.