If you just have the standard Hellwig rear sway bar (part# 7705), then you should be fine, as there have been folks that have installed dual-exit cat-backs without a problem. That being said, I haven't seen anyone with one of those sway bars and this particular exhaust. If anything, very minor adjustments may need to be made that a competent exhaust shop (or DIYer) should be able to make without a ton of issues.