[Mike C]

I did this swap on my '70 GMC 2500. I took the spindles and control arms off the donor truck along with the prop valve and tie rod assemblies (innner and outer as well as sleeves.) I bought new steel lines for a '71 along with new rubber hoses. I cut the hose tabs from the frame of the donor truck, then after positioning new steel lines in my truck, I attached the rubber lines and located the cut-off tabs on the front of my frame where I tack welded them as they should be on a 71-72. I used the drum booster but disc master with the donor prop valve, but the drum booster is not as strong as the disc booster and my recommendation is to do the disc booster as well. Note that you will now have different size lug studs front and rear unless you swap rear axles or hubs as well.