Who sells pre-made brake lines for a '71 GMC 1500 P/U?

[GiMiCs]

Hi all, Does anyone know who might sell already made brake line replacements for a '71 GMC 1500 1/2 ton P/U? I looked at them, and it looks like 1/8" lines, junctioned into 1/4", and/or possibly 3/16" which I think is what I made/bent myself for the rear two wheels from the "splitter" valve(apportioning valve maybe?) at the rear axle back to both rear drum brakes...
I don't know if I have the time or patience to fashion so many different sized lines for the front from the master cylinder down to the front discs-etc;
Also, can I just bolt in a power booster unit I bought for this model, which currently has a manual master cylinder on it now? Thanks alot for your help! Great site!