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Discussion Starter #1
Hello, I own a 2004 3.8 v6 mustang and I recently had an exhaust installed. I have
Pype's catted X- pipe for v6 and SLP loudmouth catback. My question is I wanted to get pacesetter long tube headers and I didn't know if they would fit. I'm trying to get a throatier sound and wondered if shorty headers really make a difference.
 

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shorty headers give you a more raspy tone andd long tube headers give you that amazing rumble
 

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The Pacesetter L/Ts should fit fine as long as you have a manual transmission. I read recently that Pacesetter L/Ts won't fit on an automatic. They'll fit but you will also need to swap your midpipe for a shorty midpipe that is compatible with L/T headers.
 

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on the summit racing site the pacesetters they have say they fit automatics
 

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i have a 2004 v6 3.9 l also. will shorty headers fit my mustang? willl long headers fit my mustang? then what is the diffrence? thanks!!:D
 

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yes, and yes they should fit the only difference is internal.. the heads and block are exactly the same from 3.8 to 3.9
 

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yes, and yes they should fit the only difference is internal.. the heads and block are exactly the same from 3.8 to 3.9
thanks! then what is the advantage of going wiht a shorty rather that a long one?
 

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no the advantage is in getting the long one.. shorty's flow the same as your stock header.. longtubes flow and sound better
 

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so will shortys improve the hp? will long improve hp? wich is better?
 

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so will shortys improve the hp? will long improve hp? wich is better?
Shorties will give you nothing; your stock headers flow very well. Long tubes will give you some extra power but be careful if you have to pass emissions.
 

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Discussion Starter #12
I have high flow cats on my X pipe, will long tube headers bolt right up to my X pipe. :bigthumbsup Thanks for the info by the way very helpful.
 
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