If you're using the Belbucus tracks, they are already synched to the GOUT, you just need to add 1.017s to the start of the files.
Follow this guide here:
http://originaltrilogy.com/forum/topic.cfm/How-to-make-a-Star-Wars-DVD-with-the-restored-mono-mix-PCM/topic/8288/
The process is the same if you're using two audio tracks, the only additional step is that you will need to encode both PCM files to AC3 to keep within bitrate limits.