Power disc front brakes for my '70 - question

[69Tom]

Hey guys. Now that I have my truck, I'm interested in making a couple upgrades to it, mainly to make it a little safer driving in traffic around here. First one I'm interested in making is converting to power disc front brakes. It currently has non-power drum brake all the way around. I'd like to use stock GM stuff, if possible.

Essentially, what should I be looking to buy?

I know I need a booster with a front disc master cylinder. What will I need for the front discs--what will fit?

And I know this isn't the place for a WTB, but if anyone has anything....

Thanks