The steering linkage was only different for slant six/V8 cars in the early A body cars. In 1967, the steering linkage was the same for all models.
Steering linkages often changed though. 1967 used a stud type idler arm. 1968-72 were the same and still used the Idler and Pitman arms with the center link attached from above. The 1973-76 cars were different. The center link was attached from below. This made oil pan service a LOT easier! I change all 1967-72 cars I have had to the 73-76 design. Again, all 67-76 cars came with center links that allowed a slanty or a V8.
