So I talked to my interior / reupholsterer "guy" here in Scottsdale.
It can be done - to copy this plate - but as with most things in life - it takes money.
The OEM radio blank plate for the F355 has slightly curved edges back into the dash on each side so that it floats a little bit. On Barry's challenge car shown in the photos above - it appears that his plate may be fully flat without curved edges. Those are the two ways to make the plate.
if the plate has curved edges - the price goes way up
metal mold - around $2,000
Fiberglass mold - around $1,000
After this, or if the plate is flat,
then each unit will run around $175 with the nice leather and padding to match OEM and with the clips except the white wiring piece which is still available from parts suppliers.
This is a direct cost to the upholstery shop. I'm trying to help the group. There is no money in it for me.
Let me know if anyone is interested.
“We sleep safe in our beds because rough men stand ready in the night to visit violence on those who would do us harm.” George Orwell