SAP PI 7.1 not visible in QuickSizer

Hi ,

I was trying to do a sizing for a PI system on Quick Sizer . The PI Serveris on Netweaver 7.1 but the quick sizer tool is giving me the option for Net weaver 7.3 only . Is ther any way , we can change it to 7.1 and perform the sizing .

Please Suggest ?

Thanks

Nishant