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Going from True Duals to Y and GMMG

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Old 02-21-2011, 09:41 PM
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Originally Posted by n2oblkz
I'm getting ready to add cats to my GMMG setup, what are the brand of cats that you're using?
I believe they are thunderbolt. I got them on ebay.
Old 02-22-2011, 12:09 AM
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Looks great
If it's one thing I wish Trans Am had...it would be the CME.
I am getting my LT's here soon, gonna go with a catted y-pipe. I don't think I'll need the I-pipe muffler mod but this does look nice. Sound clips probably won't do it justice again



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