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2011 Challenger RT Classic
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Discussion Starter · #1 ·
I have a 2011 Challenger RT Classic with the 5 speed Auto. I want to install some Spin Tech Sportsman Street 3000 mufflers. What I have researched has confused me......... I have read they are 2.25" in & out, 2.50" engine side 2.25" tail side, and every configuration of Center / Offset / In / Out there is. What is the real truth here, experts?

Is anyone running Spin Techs? I have the 6000 Pro Street on a 355 Chevy and they sound Killer.

Thanks
 
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