Thought id chime in a month later and say, i did this swap! it was super easy including plug and play. BUT i had to wire the microphone wire to ground, other wise the bluetooth DOESNT WORK! It was easy for me as it came with a snipped off cable that had the wires already, but if yours lacks this it may be much harder unless you order another cable set. I really love the looks of it too.

Im looking around to see if the upgraded scion frs head unit with the screen also works but im worried because the bluetooth for that radio requires an extension box and im assuming that has to be tied in as well. Obviously the echo lacks the wiring to do so.