DESC: The 1998 Porsche 911 Carrera is available in five models - coupe and convertible in 2WD and AWD. Exterior equipment includes an extendible speed sensitive rear spoiler and 17-inch alloy wheels. Optional interior features include power seat adjusters and heated seats. Standard convenience features include an on-board diagnostics system, automatic climate control and power windows and door locks. A four-speed Tiptronic transmission with overdrive is available on all 2WD models. Optional equipment include racing style sport seats, an infra-red security system and a remote control six-disc compact disc changer. Safety features on all models include front fog lights, a limited slip differential axle and a traction control system.