So what else is different? People are changing out all the arms and bushings and it's not a lot of money except for the labor on the rear bushings.
Let me get this straight... You are swapping out parts designed by some of the top engineers in the world because some guys sponsored by a company told you it's "better??" But when you ask the same guy about tracking, "oh no, I have a kid now" or "I just detailed my car." or "i just got new tires."