The 1982 model year brought a new 5.0 High Output variation. Manual-transmission equipped Mustangs and Mercury Capris were first equipped with two-barrel carburetors (1982), then a four-barrel Holley carburetor (1983–85). The block was fitted with revised, taller lifter bosses to accept roller lifters, and a steel camshaft in 1985, and electronic sequential fuel injection was introduced in 1986. While sequential injection was used on the Mustang beginning in 1986, many other vehicles, including trucks, continued to use a batch-fire fuel injection system. The speed-density based EFI systems used a large, two-piece, cast-aluminum manifold. It was fitted on all engines through 1988, after which year it was phased out for a mass-air type measuring system in most applications (non-California compliant Panther platform cars retained the speed-density system until the Lincoln Town Car received the Modular V8 for model year 1991, and the Crown Victoria and Grand Marquis for 1992).