You also need the bolts to secure the brackets, as the existing ones are not long enough.
You will need to try the type of light you want, to see if it will physically be able to be fitted. I had to make new brackets on the light itself.
I fitted a GME CB, it sits on the dash shelf and is connected to a Sena SR10. PTT is via the high beam flasher, mic and adio are fed from Sena 10S intercom unit. You may have to fabricate your own antenna mount.