I think Speed Art makes the blinking mirrors.
We spent some time comparing the 987 and 986 mirrors and decided it would not be a simple swap. The mounds are different.
What I thought was interesting is that the interior mirror for the 987 is the same as a 986. I like the oval shape because it matches all the oval shapes in a 986. Those oval shapes are gone with the 987 so the mirror looks funny to me in a 987.