I tried one. Didnt work in the Z. I think maybe because of the FM amp used in the Z.
Tbh, I tried glass, splitter etc and couldnt get a reliable signal until I went for a proper body mount.
I lost FM which doesnt bother me but you can get combined FM and DAB body mount ones
Out of interest, on a scale of 1 to 10 how do you rate the body mount?