Well guys i got a friend that a 2007 Malibu SS 3.9 and i was checking out his exahust and saw something very wiered on his car.... this malibu is of course a dual exahust malibu but its a single pipe that goes into a y-pipe just like our montes, n i saw his y-pipe was modified to where you see the two pipes spilting and then i saw a pipe right in the center between the two pipes that has a sealed plate which can be bolt on and off that becomes a cutoff so i saw this and was like wow pretty impressive work..... plus the sound on this is awsome love the sound makes it sound like a v8 car so im going tomorrow to get this done see how everthing comes out.... if u guys can give me some opinions on wut you think of this... i would really appreciate it