I would hope that Dave @ Hellwig will be able to answer the question about the LCA tabs. I don't believe I ever heard back about it. They might have to make a 2nd bar for factory sway bar tabs.
Which is one of the nice things about the Addco bar - it works with these - or at least with some of them. Bad thing is that it interferes with brake calipers when on lift fully distended ( and fully left or right lock)