There was a discussion/post not long ago about the same thing for 39 Mercury's.......I saved this from a post.....I "think" 40's are the same....IF you call him and he still does them, let me know and a cost for them as I need 3 sets (2 - 39 and 1 - 40)!!!! He would be the "ONLY" source if he does.
770-502-5950. His name is Drew Bland