There are some vehicles that are defined by their engines. I can think of a few off hand:
Ram 2500/3500 - I-6 Cummins Diesel
Jaguar E-Type - 3.8L I-6
Porsche 911 - 4.0L Flat 6
VW/KDF Beetle/Wagen - Air Cooled boxer engines
Subaru - 4/6 Cyl Boxer Engines
Mitsubishi Lancer - 2.0L Turbo (EVO)
Mitsubishi 3000GT - 3.0L twin turbo…