I've installed them for customers. I saw one break on a S/S Challenger. Fortunately it happened in the burnout. Not much advantage vs cost. What would you adjust? Mine are homemade. Cut the stock ends off. Turned them in a lathe untill they fit into .090" moly tubing. That coupled with urethane bushings works very well. And theyre lighter than the aluminum parts. stronger to boot. Back in the day Nascar Mopars used an upper ball joint welded into the K frame. Then a fabbed strut rod was threaded onto the joint stud. Funny racers worry about bushings slowing down travel due to bind. Then spend $1000's of dollars buying shocks to slow travel.
Doug