Should I go x-pipes w/o cats or h-pipes w/o cats on my 97 cobra? I was told the h-pipe had a more muscle car sound while the x-pipe is more of higher pitch Indy car sound. Is this true? If I go with the h-pipe, should I just keep my oem h-pipe and just cut off the cats? I have Flowmaster 40s on the back end. Let me know what you think!