Measuring for tierod and draglink lengths requires you to measure from steering arm center hole to steering arm steering hole and for the draglink, pitman arm hole to steering arm hole. We have found that the upper ball joint or upper center of kingpin measurement is the best to use for tierod length. Draglink length we compute from your measurement with steering centered from pitman arm hole to upper center of balljoint or kingpin center. We recommend that you call to be absolutely sure what you need. (530)885-0673 Monday - Friday PDT 8AM-5PM