Cut the factory muffler out and put in a 22" magnaflow. I have a 18" and while it sounds great in my 4.7L, I think the longer one would be better suited.
2006 65th Anni. Grand Cherokee 4x4 in black w/ 4.7L V8
Installed- HID 5000k kit in fogs, Superchips programmer,AFE stage 2 intake, Jet 180* Thermostat, De-badged, Flyin' Ryan Modified Throttle Body - Ported then bored out. Magnaflow muffler. Rola Roof basket, Stubby Antenna, bquiet sound dampening for the rear deck. Rigid led spots on rola rack.