were replaced with the 2.5 L 300Tdi 4-cylinder and 3.9-litre Rover V8 engines. The 300Tdi introduced a Bosch electronic emissions control for certain models and markets. At around this time, a stronger R380 gearbox was fitted to all manual models. The newer models featured larger headlamps and a second set of rear lights in the bumper. The new rear lights had their wiring configuration changed several times to meet real or expected European safety legislation. Some vehicles were left with an arrangement where the vulnerable bumper contains the only working direction-indicator lights; other examples have these lights duplicated in the traditional rear pillar location. The interior was completely revised, dispensing with most of the Conran-designed original. An all new "soft feel" dashboard was introduced (a derivative of which was also used in the run-out Range Rover Classic), which replaced most of the components from the Maestro and Montego with the switchgear and instrument pack now coming from the R17-series Rover 800. The new design allowed the fitment of airbags and a proper locking glove box replaced the zip bag of the original interior. North America The 1994 model year marked the first year that the Land Rover Discovery was sold in the United States. Airbags were incorporated into the design of the 1994 model to meet the requirements of US motor vehicle safety regulations, though they were not fitted as standard in all markets. All North American specification (NAS) models were fitted with the 3.9-litre V8 from the Range Rover SE models, and later models saw a change to the 4.0-litre version of the engine. Technically speaking, the 1996-98 US models with 4.0-litre engines had the same displacement as the 3.9-litre engines fitted to the earlier 1994-95 US models; the differences between the engines involved improvements to the block rigidity and pistons, and a change from the Lucas 14CUX engine management to the distributor-less Generic Engine Management System ("GEMS"). In earlier 3.9-litre US engines, the fuel injection computer (14CUX) did not control the ignition, which was instead controlled by a traditional system with an ignition coil and distributor made by Lucas. The GEMS system was developed jointly by Lucas and SAGEM; it controlled both spark timing and fuel injection. Unlike the earlier systems fitted to Rover V8 engines, GEMS was made OBD-II compliant. This change was largely driven by the federal requirement (starting in 1996) for vehicles sold in the