So I just ordered all the parts for a ZJ conversion to include new drag link. Balls are already replaced. I figure my lack of issues is adequate rationale for performing the upgrade. I'll let you know if I move the Jeep from good to great. Should take two weeks to get the parts. If I can find a fresh engine under 60K miles, I'll swap that out as well. I have all the gaskets ready to reseal the engine and I'll move all of the new engine bolt ons over as well.