I got mine from a local (Salt Lake) shop. Should be easy to find. Who installed your Z919? The technical principles of hooking up the empeg are not that difficult for a competent installer. More important is how clean an install they do and how they meet the challenges of whatever mechanical oddities they run into. In other words if you can find an installer you trust but who has not installed an empeg before - go with him. Or a mechanically-inclined friend.
In my experience the two likely areas of trouble are:
- having room for the empeg's "flange" - both the sleeve and the unit its self are bigger than the hole they slide into. On my Subaru Outback this interfered with plastic trim that came right in to the hole.
- having enough depth behind the dash for the sleeve and its wire harness.