Well actually I didint use that exact one, I made one (i used to work at a shop were i ran an Abrasive waterjet cutting machine) so i cut my own gussets out of mild steel and used a peice of 1 5/8 dom Tubing and welded the tube across my frame rails, then welded my gussets in place.
But that kit that comp engineering has does about the same thing and i beleve it uses a shock that is easyer to get. My shock has eyes on bottom and top, and i think the comp engineering kit uses an eye on bottom and a stud on top (just like the factory nova shock) so you dont have to look for and measure shock lenghts to make sure you get the correct one. But shortening it up shouldint be too tough.
http://www.jegs.com/webapp/wcs/stores/servlet/CategoryDisplay?catalogId=10002&storeId=10001&categoryId=21077&parentCategoryId=10075&langId=-1
This is more like what i used but I made custom tabs that i could mount at an angle. The first kit i gave you a link too, already has your upper shock mounts fixed so you dont have to worry about putting too much angle on on your shock (over 22* and the shock is no longer effective)
My car is 2 1/4 inches lower in the rear so i knew i was going to have to find a custom length shock anyways.
But if you can i would weld in your brace. Everything on mine is welded
