Imo if its a cali car and u are in cali stay with the cats due to that ridiculous emissions laws they have. If u live like me in florida
were no emissions laws are ftw no cats o/r x pipe and w/e else u want for exhaust. Word to the wise if u dont like a drone go h pipe deepee tone less of a drone depending on the rest of exhaist setup. My example is 96 gt with o/r x and dump downs i love how it sounds i just want louder lol. However x pipe while improvement over h pipe in performance gives off a raspier sound 3k and above
1996 Mustang GT, 17x9 front and 17x10.5 cobra r replica rims, 255/40/17 front 285/40/17 rear at the moment,
o/r x-pipe flow master 40 series dump downs, cai/ram intake, 75mm c&l throttle body and plenum, pi heads and intake swap, msd wires, stock gears, untuned at the moment, no dyno numbers for now.