SAP BW Connectivity to EP 6.0 SP2

Hi,

We have installed the EP 6.0 SP2 for our Development and Production Servers.

We have SAP BW 3.1 system.

Now we want to connect these two systems for getting our BW Reports into Portal.

In this Procesure, i wanted to confirm,

For this connectivity, so we need to install the ITS Instance or Just we can proceed with the System Landscape Creation and User Mapping.

For EP 5.0 We have installed the ITS Instance.

So for this EP 6.0 also do we need the ITS Instance and also the WP-PI Componenti n BW System.

Thanks & Regards

Sumanth