Hello and welcome to the forum! Are you going to be doing any tracking or is this purely a daily driver? Other members will likely chime in with opinions/experience. For tracking, Tarett makes some excellent sway bars. I'm also attaching a link to our site's DIY tech articles for the 996 - please let us know if you have any other questions.
https://www.pelicanparts.com/techarticles/996_tech.htm