9:13 AM
Maserati's latest speed demon, the Quattroporte Sport GT S will go on sale this spring, the company said at the car's debut on Monday at the Detroit auto show.
The Sport GT S gets a 4.7-liter V8 that pumps out 433 hp--an increase from 425 hp in the Quattroporte S. The gearshift has also been calibrated for an even sportier ride.
The front and rear suspensions receive single-rate dampers, stiffer springs and the ride has been lowered. The exhaust note is tuned to provide a deeper and throatier rumble with pneumatic valves.
The striking sedan gets an eye-catching black concave grille and new headlights with a metallic finish. The shadow-line treatment--so dubbed by Maserati--includes black finishing around the doors, body-colored door handles and black exhaust pipes.
The interior is marked with Alcantara and leather seats.
The Sport GT S honors the 70th anniversary of Maserati's first win in the Indy 500.
The all-new Quattroporte is due for 2012.
