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

Rob Dickinson of the ’90s group Catherine Wheel started Singer Vehicle Design, where a team modifies Porsche 911s. The starting price is $845,000.

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 ...