[Mike C]

The brake lines go down the rear of the crossmember, then they crossover to the front. In order to not fold and kink the lines, they need to route from the front. I ordered a set of 72 3/4 ton truck lines from Inline Tube when I did the swap on my 70 3/4. I had to buy rebuilt 71-72 calipers as they setup I swapped on was from a newer truck. I cut the tabs, where the rubber lines go in and are clipped to, from a donor truck. I then tack welded them on the front in the right spot. You could cut the ones off your truck, but I wanted the option to go back. (Fat chance that ever happens, it's nice the truck stops!)