Onadream

Hey so I'm new owning a Pontiac and anything to do with cars honestly so I came here to ask a question.. I have a 2097 Pontiac G6 and I need to replace my rear sway bar and have read a stiffer sway bar can offer more agile control which I personally would love.. called a place to try getting it done and they'd prefer I bring in my own part so the question is what would be a good stiffer sway bar to purchase for my Pontiac?