For those who want to put heim joints on as MANY parts of the car as possible, we bring you the Ingalls PowerStick. It's basically a solid metal version (there's a poly bushing at one end) of the stock plastic/rubber dogbone pitch stopper. I think it'd be a good match for a lot of the high-power WRX's we see on the dyno, which sort of look like the engines are going to jump out of the engine bay under load.
Comes complete with thorough installation instructions. Fits all 2002+ WRX.