On the top cover it says:
LINK
Engine Management
www.link-electro.co.nz
The sticker on the outside back says: LINK Subaru EJ20/25 D42EJAVO 230603
The large LINK chip says: D42EJAVO 200603
The sticker on the inside wall says: 2003/02 S/N 001940
I was told that I could wire this into the 91-94 Legacy w/ej22t motor.