In 1966, Masérati launched its Quattroporte with a new 290 bhp 4.9 litre engine. In addition to the mechanical aspects, the front end was reworked, and was recognisable by its headlamps: 2 pairs of twin headlamps instead of the simple rectangular headlamps of the first series. Quattro Porte owners include Anthony Quinn, Stewart Granger, Marcello Mastroianni, Alberto Sordi and Rainier III of Monaco; Peter Ustinov even bought two!