Actually the billet block was
Actually the billet block was based on the ej25, hence the 99.5mm bore, factory ej25 bore size, and they used a wrc 2.0L crank. It is common for some to destroke there ej25 with a ej20 crank which gives them 2.3L. It has been known for some to do this in the subaru community, a lot of pros to doing it. I know it sounds weird for one to want to reduce liter size but it has its benefits and its place.