identical? how!?!? all those cars have stock 4 cats, yours has to sound better, i listened to the one on the 5.0 an there are two clips of it on a 4.6, they all sound the same with the 4 cats.
I listened to a bunch of soundclips...at idle my SLP sounds like the SLP 5.0 they have listed, if anything mine has a deeper rumble with no cats. if you listen to the 4.6 spintech listed for the 01 bullitt mine sounds IDENTICAL when revved