Hi
Select option SAP Business Suite 2013 7i Supp. release 1, you will have an option for Ehp7 for SAP ERP 6 ABAP.
Ehp7 is running on top of NetWeaver 740 but the NetWeaver will be installed as part of ERP installation.
No prior NW installation is required for installation Ehp7 for ERP 6.
Best regards