We've seen all sorts of engine swaps here at Motor1, but this build by Sam Albert is probably the craziest.
Albert is a stage rally racer in North America, campaigning mostly in a 2004 Subaru WRX STI. He has been looking for ways to increase his car's power, and after researching the rulebook, he discovered that a naturally aspirated motor in 4.5 liters and below had no restrictions.