I just recieved my magnaflow catback. Can someone with a 99-02 scsb tell me what muffler came with your system. I got part #15617 which is the side exit. Mine came with a 5x8x18 muffler with offset and center inlet and outlet part# 14259. Is this right, I called the place I got it from and they called magnaflow and they said it was right. Magnaflow told them the website and catalog was wrong on that the part#. They said mine was right. The part # says it should be a 5x11x22 or part #14579. What about it blown chevy or chingon what are your's like. I need to know so I will know if it will work or if I need to call magnaflow myself.