with a to4z cams and a good tune you can expect around 450-480kw atw. We finished one at work not long ago with a similar set up we saw 474kw.
EDIT: Forgot to add that, with that power, and a car in the weight range of 900-1100kg you should see a low 9, if not a high 8 with a sorted car (suspension, ratio, and tune)