Single to dual master cylinder on 64 Dart - What do I need??

what all parts are needed to make the changeover from single bowl master cylinder to dual master on a 64 Dart? It is drums all around, stock braking system. What year car has the right master for the swap? I will have to buy all new stuff so I need to know what to ask for at the parts counter. Also incidentals like proportioning blocks, etc. Again, its drums all around just want to upgrade to a safer M/C.
Thanks in advance!!!
-Tim