[bigmoe]

My stock Gen IV 5.3 has shorty headers, duals with no x/h pipe, Magnaflow XL 3 chambers and tailpipes over the axle and out behind the wheels. Love the sound on start up and slow power. Don't really like the hard throttle because it's quite "plappy slappy", not what I would call smooth and deep. I added some cheap resonators under the cab before the mufflers but it didn't really change it much. It's okay but I wish it was deeper and throatier.