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I would say the Dresser Duals would flow better.
Especially on the cross pipe.
The stock one is smashed down to an oval shape. I'm assuming so it doesn't drag.
The Dresser Duals have a nice round cross pipe..
Plus they look better than stock.
Don't forget to look at the RUSH cermi-coated true duals... ceramic coating inside and out... I love mine, fit, finish, all around quality, outstanding!!!
I bought a set of Rush tru-duals. My 2nd time buying their headers. Perfect as the last time and these where used.
I actually prefer the rush over the DD, the Rush shields cover more and the ceramic coating is just icing on the cake. You can really feel the heat difference with that coating. I'm betting that ceramic coating will be the norm for head pipes in the not to distant future.
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