This model has the same dimensions and hardware holes as the insert that is included with Stern’s Speaker Lighting System for Pro/Premium and for the LE. It’ll work as long as you have the 5 1/4” speaker plates.
I've also created a version that includes an inner diffuser ring to soften the side views and downward playfield glass reflections.
You could use this model as a template to design your own custom inserts. If you are looking for some inspiration, here is a one that created for Jaws:
https://www.printables.com/model/1040267-jaws-pinball-speaker-lighting-shark-insert
I'd recommend printing inserts in white with the following settings:
(Note: The photos are of the original Acrylic part, not a 3D printed version)
The author marked this model as their own original creation.