Bob,
I did exactly what you did, i.e. Cain’s veneer and bezels. I posted a picture at the time.
You can do this, no problem.
Drop the dash, and loosen the grub screws. Make sure to put some towels over steering wheel to protect the dash.
As my dealer inflates the tires much too much, the grub screw on the fan would loosen up due to the rattling... I found a small space/gap under the dash, through which I could fix it again, but boy finding this little screw, is painstaking...
With the dash off, I labeled all the wires with numbers, so I could put things back easily.
BTW, I thought that Cain provides excellent instructions on what to do.
Succes!
Bert