My solution for my CB mount might work for you. If I knew how to post a picture I'd do it but I can't seem to find any instructions for posting photos.
I decided I wanted my CB mounted on the transmission hump just ahead of the center seat, but being “cheap” whenever possible, I didn’t want to spend the money for the mounts I’d seen. Solution: went to Menard’s and bought two “L” shaped, 4X7 inch shelf brackets that had snap-on plastic decorative covers over the bare metal, screwed them onto the transmission hump at the appropriate spacing, ran the wires under the carpet, and now have a very satisfactory and attractive mount. Total cost for brackets and screws—less than $5. 00!