No actually it will be exiting through the floor board, but you could run it through the inner & outer fender if you like, it shouldn't matter as long as it's downhill from the vent drain tube so the water drains.
I'll get a pic later today to give you an idea where I put mine.
The pic will be from inside Large Marge BUT I will be doing the same thing w/that drain.
I will show you how I had(in the 40) & will have (Marge)the tube running to.
I will bend a piece of tubing to show you..joe