I'm looking into buying an E34 530i with a smaller 3 liter V8 compared the the 540 4.4 liter V8. A lot of people online say buying a 530 is pointless when you can get the same car with more displacement and more power. I think that's ridiculous since displacement is only 1 of many ways to make power. Volumetric, Mechanical and thermal efficiency all have a factor. Port geometry and mechanical timing as well. Look at formula 1 or a company like ferrari and you always see a high revved small displacement engine. My Kawasaki ZX6R has 600cc's of displacement and it makes 107hp at 14k rpms. So bring the rpm's up. Make sure you have oil pressure to bearings and friction surfaces and adjust your valve timing to make power at a higher rpm. What else is possible trying to go this route? Also what are the benefits and draw backs of going a route like this?