best sounding muffler for impala

does anyone know what muffler would give the impala a deep rumbling tone, cause im probly gona get one but im not sure which sounds the closest to a v8. I know its a v6 but theres gotta be a muffler some where that would fit on my car and get that sound. (i was thinkin flow 40s, vortecs, or the american thunders.) thanks for any help