I think that it all comes down to the type of driver you are. If you are pretty much one with your car and familiar on how it performs, then see what you need from there. You might be the type of driver who likes rear rotation. I really havent heard of anyone experiencing snap-oversteer with a larger bar. It also depends on the size you get. Auto-x without it first, then with the bar. From there, if you feel as if its too much oversteer, try using a larger front sway bar.