I looked at the logistics David, but without a car in front of me I can't give a definitive answer. Tried to find someone's photo that would give a better idea and came up with this one from Nick's build log. The orange arrow shows the route such a pipe would need to take.............tight.
Now looking at chassis pics there's only one position that misses chassis tubes and that's indicated by the orange dot.
Transpose that to the body and it comes out off-center in the panel which would look weird.
You can't bring a big pipe any further forward because of the main door hinge support vertical member. Only way I can see of achieving a look like the original rendering would be to make the outlet tip much bigger than the actual exhaust tubing and offset where it joins the tip to effectively move the tip forward and center it within the panel.
Like this................
Ideally though, it still needs to be lower and I'm not sure that's possible with the convergence of chassis tubes near that point.