I know a guy who has owned his machine shop for a long time. He says when it comes to engines, they pretty well just get business for the hot rod or racecar guys, but back in the day, they did those guys and everyone else too. People would get their stock engine rebuilt. And now people don't replace drivetrains, they just get new vehicles. Thats why they had to expand into other areas like roller coaster parts and stuff of that nature.