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  1. Exhaust
    Hi everyone. Looking to replace my stock exhaust system on 2003 Buick Regal GS because i have a leak somewhere around the cat. I've read up on the downpipe and u-bend delete mods and figured while I'm tearing the exhaust up, might as well go ahead and install those mods. I'm currently looking at...
    catback downpipe exhaust regal gs
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