RE: Patriot with an enclosed pipe?
You would have to work on the top side a bit......move the canopy forward a bit maybe, and have the pipe run up through the turtle deck.
Attached is a photo of an old Arrow pattern ship. Something like this (similar to EU-1 and others too) to run the pipe over the top. Also take a look at photos of a Bridi UFO and XLT for some ideas.
I prefered to run extention tubes from the pipe outlet to the bottom of the fuselage......
Just an idea.
Bob