Yeah, those are good kits.
The rod in question, has several names; control rod, control arm (incorrect) control arm stay, diagonal arm, strut rod, are a few I've come across, for the same part.
It's a diagonal arm, almost 45deg, that locates the control arm. All the braking forces push on the back end bushing, and the front takes a beating also. The wear is sometimes obvious but not always. The bushing job is not hard, but there are a couple of tricks esp to tighten the rear bolt only when the suspension is loaded.