It's your stock humb with a mod done to it, attach your handle to the bike and sit you hump on top of it, using a marker draw out the area that the handle will hit, then using a dremel tool of hobby grinder cut away the area within your mark, start small and keep working until it fits, it will look like the open for your helmet strap...... Just take your time... I'll post a few picks this weekend...
Enjoy