Dash Filler Plate

Where might I find the filler plate / cover for this area? -
I am removing the finder and putting a JL receiver into that space.
thank you !!

I am removing the finder and putting a JL receiver into that space.
thank you !!

Answers
https://www.boatoutfitters.com/material/plastic-sheet/king-starboard
2002 FV 342 on Lake St. Clair - Past Commodore SHC - Vessel Examiner USCGAUX