As a practicing, degreed engineer, I can safely say we do have a sense of humor. Its rather dry, droll and everyone says our jokes are dumb. Just ask my wife of 38 years. You should see some of the exhaust "silencers" and intake "silencers" I've had to install for emergency generators. When you see the word "silencer" read "muffler".
Nope that not our factory, bothing in our part of California is that green But it does look like we could have made them for them Don, Smithy Mufflers, division of Pertronix Performance Products