Mercury Forum - Mercury Enthusiasts Forums - Dual Exhaust on a 2006 Grand Marquis

Quote:

Originally Posted by johndem1x (Post 29335)

. I changed my 04 Grand Marquis with a borla cat back system and it runs and sounds great. The cost was up there about $1000.00 bucks but it is Stainless steel with lifetime warranty.
still have this car today. Did the change some years ago but still runs strong with 70,000 miles on her .

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