I agree with Irish, some parts like control arms and other hard parts are likely fine and don't need replaced, bushings ball joints, springs, etc are all wear parts that need replaced more often than control arms. In fact my old '79 had a front end rebuild and the control arms were left alone because they were in such great shape. My blazer was the same way...replaced springs, gambling, and bushings, everything else was great. No need to replace good parts that rarely need replaced.