Bolt-on four link cantilever

[HAVA79]

I am looking to do a four link for the rear of my 79 blazer. For easy install I am wanting to do a KP cantilever four link. Anybody have any info or links to prior threads? Also I dont fully understand how this system can give up to 12 inches of travel vertical and still have to use a panhard bar. Wouldn't this give you too much side travel with the rearend, resulting in tire rubbing at some point. Any help appreciated. jesse