At this stage, I will be having the car done by Rev Rite Performance in Silverwater. They are honest guys, and do a lot of Jap Imports - just waiting on an approximate price, and a holder for my Autometer boost gauge, and then she will be done.
The fitted my turbo back exhaust and did a service for me about 2 months ago. I highly recommend them.
Will post the results in the new year.