New guy with a 66 Dart

A 66 Dart with a 440 under the hood and 4 wheel drum brakes with a single reservoir master cylinder. I like this new guy! Welcome to FABO.
Nope, front disk brakes. Current todo list:

-full tune up
-fuel assesment/bigger electric fuel pump as it's only pushing 3 psi at idle and drops at much above that.
-Cooling system...Doesn't like to sit in traffic and creeps up over 220 pretty quick. Planning to ditch the electric pusher and add a better shroud for the mechanical fan. The Radiator was re cored a year ago
-front fender to tire clearance issues...when I turn sharp or turn much at all while the shock is compressed
-HEADERS...these have holes in the primaries

and now apparently I need a 2 zone master cylinder.