I still have the stock crossmember under my 69,& used 71-72 lower a arms, with 75 spindles. you need to use the ball joints, tie rods , & center link for the later truck. my brake line routing is like the factory 75........lines ,hoses, master , prop valve & all. I didnt worry about a couple brake hose brackets, just drilled a hole in the frame ea side , & routed the hoses in front of the upper a arms like the 75. the prop valve is also "hidden" on the back side of the first crossmember. The steering radius problem that guys are talking about are when using the stock disc spindles(71-72,or 73 up) with the 67-70 lower a arms.......if you order aftermarket drop spindles to fit the 67- 70 there should be no problems. You can rebuild the 72 front end, & bolt the complete crossmember under your truck, but my thoughts are that by changing the crossmember you are only gaining a couple brackets that could be easily welded on to the 67 crossmember. hope that helps, good luck......crazy longhorn
