GT3 Side Muffler Delete (Optional Valve)Our GT3 exhaust has been a fun project. We spent a lot of time on testing different configurations and materials. We believe we have really put together a great option that performs very well , sounds great, and looks even better. This will fit both 991. 1 and 991. 2 GT3 and GT3 RS cars with our tips giving the ability to match both bumper lines. The side muffler or suitcase muffler as often referred are large, heavy, and restrictive. We replace these