This was the first example of the new forced-induction series of Singer's custom Porsche 911 sports cars, and now it can be ...

Bonhams Cars is set to auction the Sun Valley Commission ... Previously tested by motoring journalist Chris Harris in a 40-minute film, the Sun Valley Commission has clocked just 267 miles ...

So is it twice the car, and can it beat its extraordinarily talented rivals from elsewhere, namely the Porsche 911 GT3 RS, Nissan GT-R SpecV and Jaguar XKR 75? Chris Harris finds out, with the ...