Engine swaps make the world a better place -- there’s no question about that. Have an old Mazda Miata and want to go fast? Easy! Slap a V8 under the hood and you’ve solved your performance problem.

Some people go to Harbor Freight, see the cheap Predator engines on the shelves, then decide to fit the little things into a car. The results tend to be pretty pathetic, but one charming YouTuber made ...