Im puttin a Hearthrob glasspak on my 97 Sable (Vulcan 3.0) I want to get a deeper rumble out of my exhaust..so I was wondering what I could do about the muffler. Flowmaster 40 series, MagnaFlow racing series, or just no muffler at all with a turn down tip. Dont want the pissed off bumblebee sound, so any input would be greatly appreciated.