King-of-the-hill ZR-1 appears with aluminum DOHC 32-valve, 5.7-liter V8 built by Mercury Marine. ZF six-speed transmission is standard on ZR-1, as is blistering performance and ultra-wide rear wheels. ZR-1 is distinguished by unique rear-body work. All Corvettes get a driver airbag and ABS. New dashboard debuts with several analog gauges and a real glovebox. Base Corvettes get five additional horsepower. The radiator is sloped for better cooling. Seventeen-inch alloys are lighter-weight. A 200-watt sound system with cassette or CD player is available.