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  1. Exhaust Mods
    Hi. I am building my own exhaust soon and i need some help. I know the piping is 2.60~2.75 depending on ID or OD, but what is the Diameter (ID and or OD) of down pipe? :undecided Im putting a new higflow 3 inch in/out cat to a 3 inch In FLowmaster Super40 dual 2.5 outs im taking straight...
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