This page has some interior shots with the final conversion:
I wound up getting a new Holden emblem to replace the arrowhead in the steering wheel. I needed to disassemble the airbag cover to do it though.
I also got a new passenger side emblem, replacing the GTO one:
Here's my gauge cluster swap. I wound up getting an OEM Vauxhall gauge face off the internet and installed it September '07:
The old face...
And the new face: 
I also swapped out the door sills for Holden ones, too. These were simply double-sided taped in place, and a pain to remove.
My latest interior mod is the GTO-emblem delete from the seatbacks...
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My Homemade dead-pedal install:
The 2004 GTO's did not have a dead pedal for the left foot when cruising. I used a fabbed bracket of 22/26 ga sheetmetal and attached a pedal to the side panel.
