Hi OST, I couldn't find original article I was looking for but these might help.
Have you considered doing any of the complete exhaust work yourself or just finding a reputable exhaust builder manufacturer?
http://www.autospeed.com/A_110591/cms/article.html
http://www.autospeed.com/cms/article.html?&A=0383
http://www.autospeed.com/cms/article.html?&A=0382
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