move to 64 bit java?

I have recently started helping with an existing sdp deployment 9.1 Build 9103. The install is on a 2008 Sp2 x64 server, but I notice its running 32 bit java (see below). Is it possible to swap in the 64 bit jre, and use the wrapper-64 file in place of the existing wrapper file? Is there any guidance on this process or documentation to make the switch?

E:\ManageEngine\ServiceDesk\jre\bin>java -version

java version "1.6.0_45"

Java(TM) SE Runtime Environment (build 1.6.0_45-b06)

Java HotSpot(TM) Client VM (build 20.45-b01, mixed mode)

It looks like this machine has been in place for a while, the first patch was AdventNet_ManageEngine_ServiceDesk_Plus-7.6.0-SP-0.5.1.

Thanks for any healp,

Craig