You’re right about them being rare! There were a total of just 400 Subaru Impreza 22B STi models made in 1998, plus three additional pre-production prototypes. This makes the Impreza 22B STi one of the rarest Subaru models out there.
The Impreza 22B STi was also only manufactured for the Japanese market, though, so you’ll need to learn how to drive on the right-hand side of the vehicle if you dream of owning this vehicle yourself. Since the Impreza 22B STi was also manufactured overseas, you may need to pay to ship the car to the U.S. as well.