I spent a long time trying to grab a used Carlabs X-Brace(almost impossible) until TiC worked out a deal to start producing it again. For the money this is one of the best suspension related mods next to swaybars imo. This actually made the car more comfortable while stiffening up the rear. Anyway, the X-Brace is currently on sale at TiC for about $70 less than normal. http://turninconcepts.com/carlabs-development-x-brace.html