The Modificata 456 M appeared in 1998, starting with chassis number 109589. Many changes were made to improve aerodynamics and cooling, and the interior – still featuring Connolly Leather – was freshened with new seats and other conveniences (fewer gauges on dash, and a new Becker stereo fitted in front of gearstick rather than behind as in the very shallow and special Sony head unit in the 456 GT). Some readily apparent changes can be seen in the two adjoining pictures. The 456 has a smaller grille with fog lights outside the grille. The 456 also had hood-mounted air scoops which can be seen removed on the 456 M. The undercarriage spoiler on the 456 M is fixed, where the older 456 had a motorized spoiler that began its deployment above 105 km/h (65 mph). Power was up slightly on the Modificata now using Bosch Motronic 5.2 engine management at 442 hp (330 kW; 448 PS); the firing pattern was changed for smoother running, and the torque remained the same for later versions of the 456 GT. In the final year of production 2002/3 customers could specify their vehicle using the Carrozeria Scaglietti Program. Launched at the 2002 Geneva show using Michael Schumacher's own 456M GT as an example, customers could work with Ferrari personnel to create a highly individual car. Schumacher's car had a two colour paint scheme, custom leather interior, re-worked instruments, an uprated handling pack and cross-drilled Brembo brakes. Such cars would be thus designated as a Tipo 456M GT(A) Scaglietti.
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