brake booster help needed

[anythingonwhlz]

I just picked up a 1970 Suburban 2wd w/ drums brakes all around. I got a used power booster set up all in one w/ master cylinder and porp valve in the deal. So I did a 5 lug disc brake swap and now am getting to the firewall parts. What I need to know is if the power booster from a drum/drum set up is the same power booster that is from a disc/drum brake set up. And same question with the proportioning valve. I do know the master cylinder is different. Reason Im asking is the PO of this 70 Suburban said he picked this used set up to do a disc brake swap. Any advise is greatly appreciated.