If you are unable to get a tune when you put the new motor in mate your best bet is to run it with stock everything to keep it safe. When you are ready to visit your tuner take all of your go fast bits and get them installed when it gets tuned.
There is a friday night cruise organised through facebook, the group is called 'Melbourne Ford XR6 Turbo and FPV F6 Community' meet at fountain gate at 9.30pm and heads out through the Dandenongs and back.
Yours is a modern classic wagnman, I was wondering when you were going to chime into this thread! have you made any changes recently or just enjoying it?