I have the exact same car as you, and i went out and got an ST rear sway bar. Unfortunately, it wouldn't clear my apexi WS2 exhaust so im gonna try and ghetto rig it. If your sig is what you have on ur car i would go with something like a tanabe that uses the factory mounting points. Since you have an LX you'll have to go to a junkyard and pick up the stock mounting hardware.