Arch-type roll bars are provided behind each seat. The Spyder's wheelbase is shorter than the Coupé's. Overall length is , width , and height . Curb weight is . In late 2004, the Coupé and Spyder underwent a minor facelift. This meant a new, somewhat larger grille with its lower edge pulled somewhat lower into the lower lip of the front bumper was installed. The Spyder also got a glass rear window in 2003 instead of the standard plastic material. The new grille also features horizontal bars, while the 1963 style oval Maserati logo “Saetta” now mounted on the C-pillars, and a new air outlet (as per GranSport versions) featured with a new rear bumper. Specifications The Maserati Coupé and Spyder utilise the same vehicle systems – engine, transmission, suspension, and interior driver and front passenger controls and safety equipment. Their performance specifications are almost identical, with some reviewers claiming that the Coupé has better performance due to its lesser weight and more rigid body structure, while others measured faster performance from the Spyder. Both models came standard with 18 inch alloy wheels that originally had a 15-spoke design, but after 2003 most buyers chose the optional 7-spoke sport wheels which became standard by 2005. Maserati offered sixteen exterior colours, ten shades of leather interior along with the ability to select among colours for various interior details such as the piping and stitching used. Five colours for the Spyder's convertible top were also offered. Engine Both models utilize the F136 R V8 belonging to the Ferrari/Maserati F136 engine family; it displaces 4,244 cc and is rated at at 7,000 rpm with a peak torque of at 4,500 rpm. Significant changes from the prior 3200 GT engine were the larger displacement resulting from an increased cylinder bore diameter and the move to a naturally aspirated intake system which replaced the twin-turbocharged induction approach Maserati had used for the previous 20 years, fundamentally because the powertrain was now Ferrari based. The crankshaft is of crossplane design. The engine operates at a compression ratio of 11.1:1 with the eight cylinders configured in a 90° V design. The cylinder bore diameter is and piston stroke length is . The engine shares many of the design features of modern racing engines, including dry sump lubrication, a pump assembly located outside the crankcase, and four valves per cylinder. The 32-valve DOHC utilises chain-driven, twin-overhead camshafts that