First drive after brake upgrade, then - BANG!

The torsion bars are correct, in the proper location and unbroken, boxes are un-damaged. All I can offer now, is that the noise I heard may have been the LCA height-adjuster was not seated properly after the brake conversion. After the noise and closer inspection of the height adjusters - I had to adjust the height of the passenger's side of the car (not under load)- all is good now.

Thank you ALL.