That fairing was taken from an original I sent them back in 1996,and it requires the small CR kit "971" part number alternator cover. It will not fit without this smaller cover. I take OEM cover and cut off and then weld on a round plate to cover end and tig weld, but that will not allow any kind of alternator.
You must cut hole in fairing just like first "kit" bikes had to have done.
Sorry for the bad news.
Mark @