mbrp 5in for 03
#6
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Join Date: Sep 2006
Location: Silver City, NM
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Well then I would get the 5" because once you get the SMARTY and a South Bend Clutch and Turbo you'll be right there... With the SMARTY coming out soon shift on the fly, I'd get the SMARTY Sr.
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#9
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Location: loudon,tennessee
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I have a 03 also,I put the 5" on mine.If I had it to do over again I would go 4" .I also put the later 4" elbow on the turbo and used the 05-07 kit. It is too loud for me and I lost some bottom end.I ended up putting a second muffler on to tone down the sound.
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