I wont use someone else's design without their permission. Parody is one thing, that's a copy write violation.
I can see more people cutting themselves with a hobby knife trying to do these. Its hard enough when I have a machine do most of the work, get into the grooves and such, and its not easy to do and look right. I think the install is hard enough as is, and for that reason I am contemplating doing an installation service where people can send their whole gauge set in and I do the work.
Im the guy who makes new gauges, check out our gallery at Teamadw.com