Converting from single master cylinder to duel ?????

I want to put a duel reservoir master cylinder on my 65 Dart. But for now I want to leave it drum breaks. Just want the added safety of having two separate break systems. My questions are this.
1 What cylinder should I use?
2 Will I need a proportioning valve?
3 Dose any one make the hard lines to do this or will I need to make them.

Thanks for any input!!!!!