The Mid-pipe I have with this system is Cat-less and is for off road use only. For this system to be street legal you will need to add catalytic converters.
SOLD! Kooks step Header and off-road X mid-pipe for Shelby GT350 5.2 ONLY! Will Not Fit 5.0. Note the picture of rear connection pipes, they were cut to pair up too Magnaflow axel back. I decided to removed the Magnaflow and reinstalled the stock axel-back and the 45*bends were welded back in...