necromant: Yes you're right. There is loads of potential in that turbo accordingly to the guy from Masters Tuning in Poland.
I have done some research on Internet and found following info on the turbo fitted on Honda 2,2 Diesel. It's only for Accord, but engine is same in both so presumably turbo is same as well:
Manufacturer: Garret
Turbo Model: GT1752V
Turbo Code: 729125-007
Turbo OEM Code: 18900-RBD-EO10-M2
You ask you get!
Wojtek