32 Bit or 64 Bit Symantec after Upgrade

Good Afternoon,

I have a question maybe someone can help me with. We are getting ready to upgrade from Symantec 12.1 to Symantec 14. I am in the planning stages and have realized I have machines in production that have 64 bit processors that are running 32 bit Windows 7 operating systems.

My question is: After the upgrade should I deploy 64 bit Symantec package to these machines to match the processors or should I deploy 32 bit Symantec to match the operating system?

I'm thinking the 32 bit version but I would rather have other opinions or a more solid answer.

Thanks!

Mark