(from page 3 of the 1984 Collection)
1984 Mustang W-code 145hp (at 4600rpm), 140 cubic inch (2.3 liter), turbocharged, inline-four engine.
(from page 5 of the 1984 Collection)
Ford offered three different 4-cylinder engines in the 1984 Mustang. This one is the middle power-level entry with a turbo. You can see it down low on the passenger side of the engine. This engine was rated at 145 horsepower.