I carry other bars as well as my own. We don't use LCA brackets on our autocross and track stuff here, so the bars were not designed around those originally. I will be tweaking the bar ends to make them work together at some point, but finding the time has been tough lately. I am a dealer for a number of other bars from Steeda, Progress, Whiteline, Eibach, H&R and Hotchkis.... but most adjustable rears use a similar setup to what I use. I know the Eibach bar will work and I can get that for you (it just costs a good bit more than mine), and I'd prefer to see you on that vs. a Whiteline as the weight is much less (both sprung and unsprung).
Strano Performance Parts
7x SCCA Solo National Champion