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x-pipe

  1. Should I switch from H-Pipe to X-Pipe? And 2.25" to 2.5"

    Drivetrain & Performance
    I'm getting ready to add headers to replace my stock manifolds. My mufflers also need to be replaced and I'm wondering if it's worth it to replace the whole shebang and go from a 2.25" H-Pipe to a 2.5" X-Pipe setup? My engine is the original 1971 stock 350 with no performance upgrades other...
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