Thanks guys for all the input

I've spoken to ASG and will do it with them on the Link ECU.

Later on this year will look at a built EJ207 with 6 Speed, still saving up and coming close

In the meantime though ASG reckon the EJ205 with the stock 5 speed will be fine as long as it's tuned properly and boost level set moderately.

I suppose I will have the full potential of the Turbo once the built engine and 6 speed goes in and another re-tune is done later this year.