USAforce87

I'm trying to find a yes or no answer as to whether or not I can get a better stereo while retaining sync and all other functions on my FX2 dash. I thought Maestro was the answer until I saw it was only able to replace the 4.3" screen, I have the full 8".
I know I can get subs/speakers/amp and wire stuff to factory radio but it has NO audio controls whatsoever (beyond treble/bass yeehaw)
Has there been any work around for this whatsoever?