I neatly sawzalled mine off at seam at back of muffler=easy to reweld invisibly, if I ever get tired of Magnaflow catback, which is not likely. These cars are made to be modified. As long as you keep the original bits and don't do any permanent damage, who cares? Drove Muffinboy's stocker last week and while it is a fun car to drive, it really made me appreciate how much my mods have transformed my car. It's an absolute blast to drive. I'd say necessities are-full Densecharger,3.73s,Hypertech Programmer, shifter(you choose),Magnaflow catback and xpipe w/cats. Not much $ and you can't go wrong.