NaturaTek Posted November 21, 2007 Share Posted November 21, 2007 The flowmaster 40 muffler i gave to my cousin to put on, told me I have to get 'reducers', and need to find out the stock size of the muffler and buy the right 'reducers'. If anyone knows this info, please post :coffee!: Link to comment Share on other sites More sharing options...
GrimGreg Posted November 21, 2007 Share Posted November 21, 2007 So he can tell you you need the reducers, but can't measure the pipe he is reducing to? Link to comment Share on other sites More sharing options...
bigfisch1191 Posted November 21, 2007 Share Posted November 21, 2007 its not that hard you get under the truck and measure the size of the pipes, plus a truck that is 17 years old has a high probibility of having an aftermarket or replacement muffeler on it. so are info might be off Link to comment Share on other sites More sharing options...
yozsi Posted November 21, 2007 Share Posted November 21, 2007 most likely to be 2.25". thats what is stock, and even my cheap ass midas exhaust is 2.25 inches. Link to comment Share on other sites More sharing options...
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