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  • Quick catalytic converter question...

    What size is on the V6 Firebird? Is it 3" in and 2.5" out or 2.5"/2.5"?? Buying one Friday. Anyone have a part number for the largest one we can use with the stock manifold? :D THANKS! Looking to go 3"/3" if possible before I put my headers on this spring.

  • #2
    Stock is 3" in, 2.25" out. Get the 3" in and out catco from summit. cto-6007
    <b>99 Camaro Z28 A4</b><br />R.I.P. 00 Firebird 3.8<br />14.89 @ 90, 2.03 60\'

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    • #3
      THANKYOU SHORTDOG!!! Awnsered my question!

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