Houston...we got a problem....probably :)

Either the LCA bushing is completely shot, or you have a pivot sleeve issue with the K frame.

You can see the LCA socket and the end of the torsion bar moving up and down. That ain't normal. The LCA socket shouldn't move around at all if the torsion bar adjusting bolt is out, the arm should just rotate on the socket. For the socket to be moving up and down the whole arm has to be moving up and down on the pin (bushing shot) or the whole pin has to be moving (pivot sleeve in the K shot). It's probably just the bushing, the clanking is probably the outer shell of the bushing going metal to metal on the pivot pin. Take the torsion bar out, unbolt the strut rod and the LCA will probably fall off the pin.