Knocking noise when brakes applied

The strut rods ("drag struts") have a rubber bushing on the fwd end where it attaches to the K-frame. The aft end (at LCA) is metal-metal. The factory bushing is 1-piece rubber that tends to get cut by the K-frame, giving a rattle. Get the Moog "improved" design that is 2-piece. Lasts longer and much easier to install. I vaguely recall a polyurethane version. I recall that was the factory setup on my C-body.

To change it, you will need to remove the torsion bar rear clip, loosen the LCA pivot bolt and slide the LCA back enough to swing it out of the hole. You might be able to do so w/ the UCA connected (forgot).