Originally Posted by Top-Deck

Welcome, congrats on the purchase! Getting into your first turbo car is always an exciting time.
It terms of tuning etc, there is heaps of info on here so just use the search function as there have been plenty of GC8s modded on this forum, from mild to full re-builds.
If you are just looking at a TBE for now this won't require a re-tune for your model.
I would personally recommend that following the TBE you go down the route of better handling mods rather than more power, especially if:
a) This is your first turbo car
b) The roads you have in Tasmania + a decent handling GC8 would be pure driving bliss

Anyway, enjoy your new purchase mate and take it down to a local track/skid-pan day if you get the chance