Hey mate,
I'm in Sydney, I've done a few NA/T conversions and have a decent idea of what to do, PM me if you want some help, i have a portable wideband and knock ears ready to go, I've just been road tuning them, obviously a dyno it better but for the on the budget builds I've done, getting them good on the street and leaving them a bit rich and a bit retarded they last and go pretty well. Heat soak will be a issue will the stock cooler