Ok, I just got home from Thermal. Yes I was able to make a quick stop and pick up the shaft adapter I have needed.
Here is the mock-up. Without the ferrule

Here it is with the ferrule.

Bad news, the adapter and ferrule are a little bit short.
Good news, I have some white paint the looks like a close base, and I have clear with white pearl mixed in. While looking for the white pearl, I happened to find the Red, Gold, orange, blue & green, red & green, blue, and violet pearl mixed in clear... Looks like I'm going to be painting 1st. That little gap would bother me. If it ends up chipping and flaking off later, that's fine.
I'll post pics after I get the paint and clear/ pearl done.