sorry to bump up old thread.. but you got this muffler and cut you stock tips to match this? which size did valve go? is it me or did stock NPP on sprot / track sound louder?
http://www.flowmastermufflers.com/st...ressive-sound/
sso basicall all ill need to do to get install and weld hangers .. cut stock tops weld into this muffler? which side is straight flow?