Clunking noise passenger side

Mid 70's A bodies are common for K-member control arm sleeve issues. Some didn't get welded properly from the factory and wallered out and craked the K-frame like you have experienced. If the lower arm shafts won't snug up then the shafts are turning inside the bushing and the lower bushings should be replaced. There have been some aftermarket bushings FB257 that were made in India and either out of spec or mis boxed that the lower stub shaft will just drop into. These are supposed to be a press fit both in the arm and on the shaft. I did get a set later on that were Duralast made in Turkey and they worked fine. I have one 75 Dart that had a worn K-Member sleeve and the guy hit a big bump with it so hard it pushed the lower shaft up through the K-frame from the rear. Hope your guy got a good location on the sleeve before it was welded back in. :cheers: