best exhaust note (what muff's?)

so theres a badass white GT runnin around here, from what my eyes can see its pretty badass, some gauges inside, great exhaust note, 5 lug, 4 wheel discs, great sized wheels and stance,ect.

a manager at my work thought he knew him, and he said he thought there was a 5.8 in there. i dunno for sure if he does or not

but anyways, was in the GFs car goin down the road and he was a few cars up in the other lane yada yada, caught up with him yelled nice car, ive talked to him before in my car but he didnt recognise me.

anyways his car sounds amazing, its not loud, but it has a good note at idle, and its a smooth, deep kinda sound that gets louder as you climb, i was watching his tach from the car i was in and i think the highest he got up to was 3 ish. but its sound seemed to pull very smoothly on up and not die off. it had the v8 rumble part and all it was just smooth sounding. he eventually got ahead of us and we were behind him and i could smell his car pretty well (not in the burning oil way) so its possible he was catless.

i have 3 chamber flows (catback) stock everything else, and its great up till 2.5 - 3.0 then it just shuts up, i want something that wont attract the military and all other law enforcement officials under 2 but to scream when i get on the loud (pun intended) pedal.

any sugestions? my shop didnt weld my stuff together, so i think i could get it changed pretty easy if i just bought the mufflers.

thanks.