Another Front Disc Conversion Question...

I'm converting the front drums (manual) on my 74 to discs (power). I have all stock 74 Nova disc brake parts for the conversion. I have a few questions before I start ripping parts off.

-What's the easiest way prop valve to use? I would like a stock style disc/drum prop valve. Will all older GM valves work?

-For the pushrod, I can just move it to the other hole on my brake pedal correct?

-I have no vacuum fitting in the back of the intake (Vic Jc), can I just "T" the PCV vacuum line that comes off of the back of the carb? Suggestions to make this work...?

Thanks in advance for the help.

Any of the older prop valves should work as long as its disc/drum. I don't think the pushrod will work even if you put it in the other hole but I could be wrong. And yes, you can "T" into the pcv line to supply the booster.