@gsh
The H6 pictured above is one of the four we bought to put into Imprezzas. They are all JDM EZ30Rs with AVCS and variable cam lift. This particular one was rebuilt with custom 8.0:1 CR forged pistons for for the SEMA show. It is going into Jeff Perrin's 06 STI using an special PDXTuning EcuTek reflashed Tribeca ECU (which has all of the CAN bus support needed for the 06).
The remaining three will be getting new rods, pistons, and sleeves before installation. For Jarrad WRX wagon and my WRX, we will be using the new Hydra (with support for the H6 wAVCS and Lift ).
Certainly more details as we get farther along, as this is a work in progress.
http://forums.nasioc.com/forums/showthread.php?p=11523254#post11523254