One of my bucket list projects is to build a classic Japanese car with a naturally aspirated tuned inline-6. Engines like the Nissan RB’s and Toyota’s JZ series are popular for their ability to hold huge amounts of boost, but the balance of the engine format also lends itself to the buttery smooth high rpm operation need for NA power. One of the obvious foundation choices for my project would be the S30 Datsun 240Z. They are definitely becoming a pretty legendary in the Japanese classic car arena. This video by Petrolicious does an excellent job of explaining why: