2 barrel with stock exhaust??

You could do like I plan on and open up the outlet on the exhaust manifold some. There's enough meat there to open it up, just probably not all the way to the 2.25" Super Six size, but there is room for improvement. I do agree though, that the two barrel will likely be an improvement even with the stock size exhaust. But even the factory put the 2.25" pipe against the stock manifold, so they must have known something.