Last brake conversion question...

[HeavyD]

Ok, I have the entire front end from a 75 chev ready to go into my 70 GMC, and have the lines from the 75 that go to the master cylinder; will these brake lines go onto a disc brake master cylinder from a 71-72? Or do I use a master cylinder from the 75 truck as well? (I also have a power brake booster and master cylinder/prop valve from a 71 to use if it can be adapted to the 75 lines) This is my last hurdle before bolting this thing up tomorrow

Thanks.