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Discussion Starter · #1 ·
Looking for information and advice... Is there a specific bolt up 4in straight exhaust I could use for my 06 gmc savana 3500 ( non extended) . I was told 4 wouldn't.work and just to cut out converter and muffler and use stock size pipe...also looking into a possible programmer. Or a single tow tune.Thanks
 

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Discussion Starter · #4 ·
So do you know if I would order a 2006 GMC Sierra or Silverado regular cab exhaust? Is there a specific one that works.Thanks
 

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Discussion Starter · #8 ·
I think I'm just gonna delete the cat and muffler . Not sure if there will be much sound different 3.5 to downpipe back 4
 
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