Can/should lower control arms be modified to accept sway bar?

Cosgig - thanks for the heads up, I had no idea. I would have welded the tab to the bottom of the LCAs, and if I understand you correctly, they should be welded to the top. As this is a project I am coming back to after about 5 years, my memory is a bit fuzzy, but I am nearly positive that I got the sway bar and the crossmember out of the same car. The sway bar does mount to the side webbing of the crossmember with the flat brackets. Thanks!

I am also interested to know whether the LCAs need any sort of bracing.