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they are not diff except some market to diff models as the pipe size can differ due to amnt of power


you can order any cobalt catback though


I would suggest a clear image auto setup, def the best craftsmanship and sound out there :)
 

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um, idk what the stock is but 2.5 is prolly the biggest you should ever go unless you're going to do one sick turbo set up.
 

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I have 3", but i have a 2.5" downpipe and muffler to create "backpressure"

2.5" is big enough unless you want a deaper tone (like i did) or are going high in hp
 

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The only echausts that will not work for you are the exhausts for the SS/TC. The reason being that they use a 3 bolt flange on the DP/catback connection. 2.2, 2.4 & the 2.0/SC all use a 2 bolt flange.
 
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