I just had my helm and cable replaced with NFB system. I have not even taken it out yet. I had a local shop do this when I found out I had to lift engine to get old steering cable out of tube on outboard. There was not enough room to do so otherwise.
Check to be sure you can remove old cable and install new w/o removing engine first. This may save you some swear time and help in making your descision.

Just an FYI.

CBuzz