I yanked the center muffler on my 5ksT (an oem type exhaust) and only have the rear muffler on now. Which muffler is a resonator and which one does all the work? I'd like to knowbecause I might redo the rest of my exhaust and I want tknow if it gets louder than it already is if I put on only one perf. muffler. Steve '84 5ksT 1.8 bar