If the mirrors are remotely like the MR2 mirrors of the era, its possible.
In the center is a ball which holds it in, and the 2 adjusting arms that also pop in for the electric controls.
Just be very careful when removing the replacement, as if you flex it at all it will shatter.
Also on install, DO NOT press with a few fingers use your entire hand pressing flat and in the center, or again it will shatter it.