Wouldnt adding a bigger sway up front increase oversteer with a weaker sway in the rear?

 

No, it's the opposite of what you'd think. Having a bigger anti-sway in the front means the car doesn't "dip" as much. This makes it slide more instead, hence the understeer. When the rear is stiffer, the front end sways more and it makes the tires bite rather than slide. So, if you do end up putting an anti-sway in front to help with the rubbing, put an even bigger one in back. Honestly, though, I don't think it'll make that big of a difference - you'll still get a lot of rub when you hit bumps.

 

Just get the fenders cut by a professional. It will end all the rubbing.

 

That makes sense. I am at full stiff in rear and half in front, my backend wants to step out when I get wicked in the corners (when I can without rubbing).

 

Upgrading the rear sway bar will help the front end body roll (reduce rubbing). Do a little research on how sway bars work and you will understanding what I'm saying.