<off-topic>
I'd have been happy with a threaded hole instead of the silly clamp thingy. I think that would reduce leak & blow-out. Screw-in switches have been used for years on other cars... But that would require a different pipe, I suppose. Surprised no vendor has offered this and a cross-referenced switch as an "upgrade."
</off-topic>
That said -- I'm a big fan (pun intended) of your work, Dave, and will follow this project with interest!