You don't need to make some "conversion" for default B738 and for it's ZIbo mod version.
The conversion mapping (about 600 parameters) for Zibo already is included in the SimVim database.
All you need is to assign all switches, outputs from the configurator (image map) and fly.
If some of parameters are not "mapped" yet (pedestal/radios, tiller, etc), it will be done soon...
What specifically do you need to clarify?