Funny 2002 non tuned Chevy 5.7 350 makes 370 BHP thats 65 hp per liter.
I think both imports and domestic have their place in the car world. I don't think however its fair to compare the two. The reason I say that is the cost of tuning an import verse's a domestic V8. I have a friend that put 15K in to a EVO he put it on a dyno and was so stoke it made 450 BHP thats fantastic for a 4 banger I was impressed also. He got to talking with a fella at the tuner shop who owns a 1971 Chevelle SS 454 He paid the same for the car as my friend did for his EVO only put 8k in to the Motor just the motor, Dyno read 895 BHP (no blower, no spray, no chips just motor) the reason I say that is both imports and domestics have their niche they are designed for different types of fast, A 300 hp AWD EVO would spank that Chevelle in a road course but in a straight that Chevelle would own that EVO..
Different cars different things they are good at.