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I have the glasspack kit, and it is quite louder than the stock sound. At WOT it is definitely louder. There is some drone from 1700 to 2200 rpm, but it's not all that bad.
I talked to Bob, and both kits are interchangeable, so I may buy the straight pipes just to compare. Once the cuts are done it only takes 35 minutes to swap the exhaust.
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09 Challenger R/T 6 speed - parked for winter
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