As Chee said near the top --- Take a look at Axis Racing
I think they are now called Raw Performance

http://www.raw1performance.com/index_files/Page678.html
http://www.subydriver.com/axra2shst3wr.html

They do a range of rebuilt Subi motors, esp the 2.5 L with various mods and brands of forged internals.
Check out on the NASIOC forum.
The current $A / US$ exchange rate means that import prices are competitive.