2021 Durango RT, Tow N Go Package which includes the SRT High Performance exhaust. Exhaust is 100% STOCK! But, for just ONE more day! I go in tomorrow to have the mid muffler/suitcase removed with x-pipe and 2 Dynomax Race Bullet resonators! A little nervous because I really like the stock exhaust but want something just a tad deeper and meaner. Cold starts never get old!