as far as i know, the wo is said to be a fast design.
i'd say don't port it. people say it's loud enough the way it is.
i don't know about lining the inside. i guess a VERY small amount won't hurt. you'll find the answer to some of your questions
hereimo, the wo is a bp4 which fires in a folded horn (please correct me too if i'm wrong, i'm here to learn). i'm also very curious, but i haven't got any space inside for a wo
. maybe i'll do a garden sub