awesome. good advice as far as exhaust size. so, is the muffler on the S2 system shown at this website http://www.advancespeedshop.com/skun...25-p-3257.html a thrush style muffler? I would still like to know whether the center support (the one that runs from the center of the radiator support area to under the center of the fire wall area) is necessary if and when I install some traction bars? lol