I recently put on the Thrush welded exhaust for my 3.7L. It sounds almost identical to the 70$ flowmaster 44, but for only 35$ on amazon.
Not my commander but here is a video of how it sounds:
2015 Pro-4x Nissan Frontier/Factory rear electronic locker in factory modified rear Titan axle/2.5"Front\2"Rear lift
Sold-2008 3.7L QT-1 dark blue Jeep Commander/3+" modified OME lift with 3/8" Rocky Road strut spacer/4" rear SL springs/265/70/r17 Goodyear Duratracs (Load E)/1.5" spidertraxx spacers/F-150 Monroe Load Levelers/4xguard matrix, front guard, belly guard, and rock sliders/Airflow snorkel/Thrush welded exhaust/
Complete 3.07 to 3.73 V6 gear swap
Powertrax rear locker