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Need help with Exhaust!
Hey guys,
I need a little help installing exhaust for my 98 5.7 ext cab sierra. Currently Im looking at a flowmaster super 50 series , 2.25'' dual in/3.00'' center out with a turn down. I just need to know the stock exhaust size coming from the cats so can buy the right adapters. Later I plan on doing some engine mods and going with headers and true duels with and x pipe and 2 flowmasters.
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