The van's RV-14a (N214VA) now has the Vetterman exhaust, since the new 220HP Lycoming engine is in it. The new bottom cowl is designed for the Vetterman exhaust. maybe I should post a picture on my FB page. It is not painted yet. I guess I must have been one of the first people to fly the RV14a with the new 220 HP engine.
Anyway, I wonder if Van's are selling the bottom cowl for Vetterman exhaust. It would look a lot nicer than the original bottom cowl.