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So, I just bought a brand new 2010 GT. Traded in my 04 Lightning and an 04 WRX for it. I'm going to miss the Lightning. Anyway, I still have a set of flowmasters that I had on the stock exhaust system on the 02 mustang I used to have but they are 2-1/4" instead of the 2-1/2" on the new car. I was wondering about some opinions about the restrictive stock mufflers as opposed to welding on the 2-1/4" flows? They will expand out that far and I can weld them on so that's not a big deal.