Tony, the 3" sounds a little different because it is on a old school small block with a 246 / 252 duration cam, the other car with the 2 1/2" system has a LS in front of it, and those motors run tiny little cams and just sound different anyway. I love the way the LS run and the power they make, but never have a been a fan of the sound compared to a old school motor.
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Frank Serafine
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