Not exactly, the E30 is about balance, not power. Even if a car has a 1.5 litre motor it can still be fast, a fast car needs GOOD RESPONSE, no matter which application it might be. Why swap the motor in the E30 anyway? It's designed to be what it is Besides, ever seen high powered drag cars, funny cars even top fuel swerving all over the drag strip? It's much to do with the body of the car being overpowered by the amount of torque/power the motor is producing Put a high power motor in a street car and the body panels will warp, it may not be visible to the naked eye, but your car is already unbalanced and out of shape, it effects the handling and speed of the car already. Ever wonder why supercars like the bugatti will happily do 417km/h and feels like it's on rails? it's because the car's being built specifically for that kind of power and speed, without it, it too, will fall to pieces I'm just wandering how guys here are making 400rwkw and their under chassis and body part's arn't falling off :S BTW I suggested the comparison between the bimmer and the turbo being that they are exactly the same size and yet how they are different from each other, and why one seemingly considered more superior by the motoring public and why one cost more than the other, everything has a reason