Corsa has released their XTREME catback exhaust for the 392 (6.4L) Challenger AUTOMATIC ... here are some pics ... We also have all the specs on our site, as well as ordering information: Corsa Xtreme Catback Exhaust 11 Challenger 6.4L SRT8 392 Automatic Feel free to call us toll free 888-SPD-LOGX for more details as well.