"Test" for final Stage Interview

Hi all,

Looking for some advice here.

I'm through to the final interview of a tier one PE fund based in London reporting to the CFO.

I have been told there will be tests, but yet to get clarity on what they will be. I'm guessing operational financial modelling tests or an excel test?

The role is to work on:

Strategic Analysis - business and strategic plans.
Reporting - operational reporting to Snr Mgmt.
Project Management - Process improvement, strategic planning, financial modelling and forecasting.
Support - to the general finance function.

So my question is, should I prepare Operational models? lbo models? Excel?

Are there any good sources out there that you guys could recommend on the above? I have about a week of evenings to prepare (I'm working full -time at the moment). I'm also a bit rusty.