Subaru produced the 22B in 1998 to commemorate the 40th anniversary of Subaru.
It also celebrated Subaru's third consecutive World Rally Championship constructor's title.
Compared to its 2.0-liter engines found in other Imprezas from the period, the 22B's engine was enlarged to 2.2 liters.
In addition to a larger displacement, the engine featured a closed deck, upgraded heads, forged pistons and increased boost.
The engine was officially rated at at 280 horsepower and 267 pound-feet of torque.
A five-speed manual gearbox with an improved dual-plate clutch and driveshafts route power to all wheels.
The suspension sports Bilstein shock absorbers, Eibach springs and aluminum control arms.
The 22B's color scheme mimics the iconic 555 livery found on the WRC rally cars with a WR blue paint job, gold BBS wheels and red STI logo.
Subaru only produced 500 22Bs.
Sadly, the 22B wasn't available in the US. It was sold exclusively in Japan.