What size Flowmaster 40 sereies muffler do I buy?

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Nov 28, 2000 | 04:17 PM

REDFORD

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Joined: Nov 2000

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What size Flowmaster 40 sereies muffler do I buy?

I want dual exhaust on my 4.2L and I was already told to get A 40 series Flowmaster single in dual out but what size do I get?
2 1/4 in/2 1/4 out, or 3 in/2 1/4 out, or what ever. What size should I get?

Nov 28, 2000 | 05:51 PM

ILUVNOS

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From: Oklahoman moving to Arizona

When you go get the duals done they will pick the right one. If the shop you are going to doesn't stock flows, then get a 2 1/2" dia. inlet/oulet.

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