
Just fitted this spacer to my 04 2500 5.7, everything fits and fitted according to instructions. I've only driven one block, I don't hear any of the howling that most spacers have, but then again, my truck has a straight pipe. I did notice a bit more low end torque, nothing crazy, but a bit more torque and mpg is a plus for me. (My truck also needs tuning, so keep in mind it may have more potential after reading this comment.)

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