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.

Harbor Freight sells many Predator generators ranging in price from under $500 to over $2000 and in starting watts from 1400 to 13,000. It's important to note that many generators are advertised with ...