i had 2 3a racing fart cans side by side on my ole 3.0 w/ a magnaflow cat, sounded pretty good, then i dropped the cat (stopped up) you want to talk about loud...anyway i contemplated paks on my trk then i heard another ranger w/ them and 2 more w/ dual and single setups one w/ 6s one w/ 12s and another w/ 18s, that was the most rice ive ever eaten in one sitting. the fart cans sounded better to me cuz they werent all raspy it was a smooth rumble and fluttered when cruising around 2500rpm. 3k yes it droned i didnt really like it but when i opened it up you could def tell it was me. the paks droned worse in my opinion at any speed, and crackled the whole way. my advice, anything smaller than a v8 should stay away from paks. those of you that have them and are content, happy for you and ill do what ill do w/ my trk, you have yours do what your going to do w/ it.