Yes, the DD part in 63DD stands for that the frame is designed for use with DD pedals. From that perspective you also should only be building with DA EX (with DD pedals) if you want to go fully original.
A person I know was working on Koga-Miyata decals recently, so I have want to go the FullPro route I could drop him a line.
I heard Cyclomondo is also working on Miyata and Koga-Miyata decals currently >>
http://stores.shop.ebay.com/Cyclomondo__W0QQ_armrsZ1