The engine continues to swell with 5.2 displacement and 4 valves per cylinder (hence the QuattroValvole). The carburettors have been moved to the sides towards the top of the engine for better breathing, unfortunately this has created a hump on the engine deck, reducing the already poor rear visibility to almost nothing. Some body panels have also been replaced with Kevlar. For the US market, the carburettors (455 bhp) have been replaced by injectors (420 bhp).