If they decide to supercharge the V-8, it will be suspiciously similar to the old engine, which is a bad move. Their target is around 400 hp and currently the XKR makes about 380hp.

Philosophically though, I'd hate to see it supercharged. I've had experience with the XJR (same supercharged V-8) and own a Mercedes C32 (V-6 kompressor). Fine engines for saloons, but they don't belong in proper sports cars. This car is looks more the GT than sports car though.