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I went outside and measured my exhaust with my grandpas mic. I got around 2.25. Is this right, I thought trucks like mine came with 2.5? Someone please help
 

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After the cat it should be 2.5 or so... the tail pipe is 2.25
 

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Not sure what to tell you.
My 1996 4.3's stock pipe was 2.25" while the stock piping on my 1989 with a 4.3 was 2.5"
 
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