[67ChevyRedneck]

Junkyard. Find a 71/72 truck and take the complete front suspension including the power booster/MC/proportioing vale, and power steering set up while you're at it too, and rear axle, or keep your eye out for a complete frame, they're sometimes as little as a couple hundred bucks, especially for a longbed. You just need to check the rear end to make sure it's a ratio that you want. Cut up what's left of the frame, bring in your old stuff and the frame and get a good chunk of money back in scrap.

Even that route will cost some good $ to do it "right." With 40+ year old parts you should at least get new bushings, ball joints, tie rod ends, shocks, rear trailing arm bushings and panhard bushings too. Plus new pads, rubber front brake lines, maybe new rotors, new rear shoes...