hotskillet

I just bought a Japanese spec 2003 TA-BP5 wagon. It's an EJ20 twin turbo (not twin scroll) and suspect 1 of the turbos may be bad. Does anyone have the any OE references, specifications or model details to the turbo used? I read that some Subarus use a VF40 but I thinks thats on a single turbo EJ20. Any help is apprecicated