I have a Unity for sale. This has a bad anti spark in it meaning it does not turn off with the power button. Other than this the unity works good. I attached a short video of it in my raptor 2. This originally came out of a Raptor 2.1.
I believe you could use a loop key to turn it off or fix the anti spark.
Comes with a Bluetooth module and the power button.
$120 shipped in the US.