[strat61caster]

+1 moderately stiffer front bar does not add understeer, just helps control the roll since like 500# of the cars mass is right between the front struts it needs all the help it can get. Yeah the textbooks say it shouldn't work but
A. Any good textbook caveats with real world data trumping theory
B. You're assuming the factory is making choices for 10/10ths competition driving. They aren't.

Still on OE rear bar with a stiffer front for several years now. I only plan on going back to oe front if I sell the car.

Edit: if you're happy with your cars balance with stock sways, great! Save yourself a couple hundred bucks and dealing with the crappy endlinks that most Swaybars come with. If you feel like it needs a tweak, come on in, the waters fine.