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  1. M

    3" exhaust opinions?

    Don't mean for this to be an argument thread... however I have heard 2 different opinions on this. I have a 400 engine with aluminum RPM heads. I bought 1 3/4" TTI headers... I've read on forums to go with 2 1/2" exhaust and H-Pipe for a lower tone. 3" is overkill and you lose low end...
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