Hi
I was thinking about this while walking my dogs in the forest this morning.
Firstly, in the tail piece there must be some thing that allows movement with the trem arm but
resist the strings rotating the whole thing round. This may not work if you manage to take the bar out
and fit it the other way up.
You can probably make it work but you are getting more difficult. I wonder does one/both of the pins stop
it rotating round?
Alternatively you could perhaps have a couple of mm milled of the bottom of the tail piece that
would have the desired effect.
Or you could inset it, into the top of the guitar, then again maybe not !!
Steve