Help with my Turbo

[Drake]

I have a Subaru Legacy RS 2.0L Twin Turbo 1993 (JDM Version)

Engine No - EJ20HDWAJE

Model - BD5A48D

The previous owner hadn't used the car well and a friend of mine who has
the identical car said the Turbo's need to be replaced.
As i have a friend going to Japan i thought i would ask him to try
and find both the primary and secondary turbo units.
What i need to know is how to identfy the turbo's as in what
are there part codes (or just what are they called) so that my friend
can try and locate them.

Thanks

Dilshan

[Huw]

Did you have any luck?