Just got the cat back from the tuner I am super happy how it did .it seems 04 cobra with a fore return fuel system twin gs342 pumps vmp Tvs gt500 tb full bassani exhaust id1000 intectors on the 3.2 4 lb lower it made 705hp 641 tq and the 2.9 on gulf 116 race fuel it made 718 hp 688 tq the drive ability is better than stock big thanks to horsepower by Herman for tuning it . It pull so hard I love it