First, I just wnat to say I never said anything to put down pushrod engines. I merely said "you'll end up with a pushrod through your skull." As for smaller displacement, high revving, engines, I agree you can make alot of power out of these engines, but I personally feel that it's the lazy way of going about it. I just dont see the point of a 7 or 8.5 liter engine that doesn't even produce 100hp/liter with forced induction. I just prefer a car that uses modern technology to squeeze the most out of a car with the least waste. But thats just my preference, if you like a car with a big lazy engine I suppose you're entitled to that, but I won't like it. Some examples of high revving, smaller dislplacement engines are the power plants for the new M3 and RS4, both are V8's so this might just keep your interest. Both of these cars are naturally aspirated, have about 4 liters of displacement and rev to about 8k. Both of these cars are very easily daily drivable, get decent gas mileage, are very well built, and produce 100hp/liter.