Bad.samaritan – It looks like you’re doing it a little at a time. Thanks for making Hotchkis a part of your build. We offer a rear
bar that will match your front bar.
Why would your wheels rub if you lowered the car? Most cars have enough room to go at least a couple of inches down before contacting a stock 15" wheel.
http://www.hotchkis.net/6472_gm_abod..._sway_bar.html
Do you know the rate of your front springs?