63 Dart front disc m/cyl?

Hi Guys

I'm going to be installing disc brakes on the front of my 63 Dart. I have already purchased a complete brake and control arm set up from a 67 Cuda, but need clarification on the best route to go with the master cylinder.

should I just go with a manual cylinder and if so, which would you recommend? or the more bulky power brake setup which will take up even more room in the already "cramped" engine bay?

Any advice would be welcome.

Rob in the UK