Mine dates back to High School. Had a instructor/teacher that was completely against anything that wasn't factory. He said the factory engineers spent countless hours/weeks/months developing the best factory parts for reliability and power. Aftermarket manufacturers were just out to get your money with "hollley 4 barrels, aluminum intakes, headers, ect. Was talking to my older brother, and he let me bring his Demon to the "Shop Class." Had 3-2 barrels on it when he bought it, and 4 speed, with 3.91s. Instructor started fussing about aftermarket crap, till he inspected under the hood, and found Chrysler Pt number on intake. I would leave parking lot going sideways thru 3 of 4 gears every time I got to drive it. After that, the instructor called me FAST NOS. (Fast NEW OLD STOCK)
Back then, we didn't have the internet, but the name has stuck with me since. Always had an A-body thru most of Air Force career, and always used screen name for car clubs and forums ever since. I even had a plate on 1 Duster that said FASTNOS.