I really took my time trying to find the right sound for my 93 GT (hrs spend watching youtube slips), and well the SLP Loud Mouth Resonators gave me that. what I am running is BBK shortie headers, BBK 2.5 H-pipes (no cats), and Flow Master 2.5 axle back manderal bent piping. When you floor it you get the loud aggressive sound you want, but you can still drive around with out pissing off your neighbors to. When your just driving around you have that fine tuned exhaust sound not to loud and not to low just that perfect rumble, even when im driving around normally I turn heads now. The down side for some may be that there is a pretty good drone when your driving along with the cruz set at 65mph. But all in all ive had the SLP resonators on the mustang for about a month and I love them, and Ikeep getting compliments on how good the cars sounds.