My setup is pretty complicated. I only stumbled on it after years of fiddling and some help full advise. If your really interested in trying mine, call me! First you would have to find a Byron #5 pipe.
If you want I could pull the plane out of winter storage and take some pics.

Ive never used a Weston pipe, but if the guys at TGA use them, they probably work! You could probably call Steve at TGA and get the real deal on what to run. He should know a little something about the Byron F-16. He would probably help you out even though he dosen't sell the plane.
(I am asuming they sell these pipes or have used them, just a place to start.)

Im sure you will get all sorts of answers that all work. The problem is the offset needed to clear the nose gear with a long pipe.

Good Luck!
Dustin