The autopilot you describe is a stand alone AP that doesn't really require an external input for most functions. So what are you interested in sending to the AP?
We do expect to support a standard NMEA output for things like track and course.
Vertical navigation with the TruTrak units requires a ARINC-429 output (this is due to TruTrak, not us). We're not 100% sure at this point what and when we'll be outputting on ARINC-429.