Feb 15, 2013
Found for you on the G-Plan forum; XPUIPC for X-Plane 64 bit.
According to G-Plan Chuck “For those that run X-Plane 64 bit and have missed your Plan-G some good news.”
It is available via this http://www.tosi-online.de/XPUIPC/XPUIPC.html” target=”_blank”>link and it runs on both the 32 bit and 64 bit X-Plane.
There is an important Readme.txt file within the zip that you need to read for proper installation.