Unless it outputs SL30 serial communications, you would at minimum require the HS34. Don't know if the analog outputs are "standard" from this unit, though, and it doesn't look like the INS429 will accept OBS input from the HS34 nor does it have output wires for OBS info to set the Dynon HSI course so it may be moot.
I don't believe that device currently has an output that is compatible with our products. Also, a general aside, though the HS34 has the analog hardware, it is currently unsupported since we've yet to find any radio (besides the 430 and SL30, which don't need the analog to communicate) that works right with it.
