Best way to install both 32bit and 64bit X2 on a machine

I recently built a new machine and purchased Sonar X2 producer. I am using Windows 7 64bit, but I installed the 32bit version of Sonar because most of my existing VST plugins are 32bit only. However, I would like to give the 64bit version a shot. What's the simplest way of going about getting the 64bit version installed alongside the 32bit? I have a 120GB SSD as my boot drive that the programs are installed to, but I have a separate hard drive where all the samples are (Dimension Pro, etc..). I imagine most, if not all of that data is the same - I'd just want the 2 sets of binaries on my boot drive. I'd prefer to eliminate as much duplicated space used as possible. However, when I ran through the installer initially, I don't recall seeing options for that.