OK. Small update. I picked up the 600x300x75 front mount intercooler yesterday for the upcoming upgrades (will post pics later). Also today I had the car dyno tuned at Gympie Diesel. I was quite happy at the outcome with the factory setup punching out 142hp at the rears.
The upgrades that are coming include- TD05 18G turbo (much larger than factory), front mount intercooler, custom intake manifold ( thanks to ben-e-boy for a stock one), 3" stainless exhaust and a high flow airbox lid. Im hoping for the fabled 200hp mark and having been in bens today I think this will be what I aim for.
Cheers.