Thanks for that! I was actually reading through some previous threads and came to the same conclusion; it's all CAN signals.Anything programmable that connects to the CAN bus could monitor the proper data (mostly to discover the ESC is off and the drive mode is not Normal) and send the proper command to the ABS firmware when seeing the handbrake switch flag. The MCU has nothing to do with that, but the Kaiser guys would have to incorporate that feature in their code, and of course it would only work if the Ford Driftstick ABS firmware was flashed to the ABS module.
That should be pretty easy to implement basically anywhere.