[Darkrider]

Ok this isnt Disk brake related but power brake related. When i was digging into the parts from my truck that were sitting in the bed from when my buddy disassembled it i found out that the truck in fact did have power drum brakes. Now i have a couple questions on this.

Drum brake and Disk Brake MCs directly interchange correct? (this is if i stay gas)
Or reverse situation say i wanted to retrofit a Hydraboost system with the Diesel engine i have and want to stay with drums for the moment. will my Drum MC bolt up to the Hydraboost unit and which pushrod would i use if so? the one from between the drum m/c and the vac booster or the one from between the hydraboost unit and the disk m/c that originally was attached to it?