Since you've pumped some life back into a flatline thread that interests me, here's a couple of versions that I have made for my '07...
For these I removed all of the COM wiring, filled the hole w/ epoxy and sanded it down to get a smooth surface that matched the other side.
Top one is my current setup. I was surprised at how clean the CF came out.

This is the setup that I used when I was running a SG seat.
I actually had a second seat w/ damaged vinyl, so i was able to strip it and make the console & seat extended match.
Having used the SG seat on my Ultra previously, I had the extender already, so I re-wrapped it in leather to match the new Corbin as well.

 

Sorry to hijack this thread, but I'm looking for a dash insert for my 2020 Ultra Limited too. I don't use the headset and want to get rid of this port. Anyone know where I can find a dash insert for this newer bike?