Have a look at the weight distribution of most modern race cars, then have a look at the weight distribution of a 911.
Then look at where the Porsche engineers put the engine in the 911 RSR race car, as soon as the rules allowed them to move the engine location and rotate the engine and gearbox 180 degrees.
It's not all about weight distribution - the polar moment of inertia is an important factor in a race car too.
But don't forget, road cars are not about absolute performance - there's the x-factor... Feel, character whatever you call it, but that's what connects people to cars.
The feel of a 911 is what people romanticise about and the fact that it is an unusual format for a car.
Then look at where the Porsche engineers put the engine in the 911 RSR race car, as soon as the rules allowed them to move the engine location and rotate the engine and gearbox 180 degrees.
It's not all about weight distribution - the polar moment of inertia is an important factor in a race car too.