Drum/Drum Power Brake Conversion Help

[LSUMurse]

I've read a ton of posts on the forums and gained much insight, however I can't find a definitive answer to my questions.

I am looking to add a booster to the brakes to make the truck a little easier to drive for the little woman. I currently have drum/drum and don't (at this time) wish to change to disc. I realize I will need a booster, bracket to the firewall, the vacuum line, and the rod to the pedal.

My question is: Do I have to farm these parts off a pre-71 truck? Can I use the setup off of a mid to late 70's truck and just use my stock master cylinder, etc? I also have the stock 2-barrell carb (on a 307), is there a port to connect the vacuum line to?

Thanks in advance,
-Stephen