the 3.0 V6 from Alfa Romeo. The engine itself to was beutiful to look at and the engine made a distictive sound unlike any other. Of course, it was made by Alfa, so a few did have problems, but it was Italian, and it was expected. But for its nationality, I prefer the engine to be unreliable, and allowed the owners to tinker with it. That is why I choose this as the best engine ever made. The second best would have to be the GM 3.8 v6, it was cheap, more reliable than magnatism, and lasted longer than Greek Aquaducts.