Is anybody running these? I'm thinking of ordering them, but I've never heard them other than on YouTube. Wondered how they sound live.

 

I have the street series CAT Backs. Quality was excellent, fit is tight. They give you spacers and bolts for the panhard bracket. I installed them in garage on jack stands in an evening. I honestly wouldn't want anything louder. They have a mellow rumble until about 3000 RPM/hard throttle and then the sound is awesome. Zapped the throttle in the driveway and it scared my 2 year old grandaughter and made her cry.