I tried to google some CB shops, I dunno if I did ya any good at all....
1) Road Runner Electronics (Trucker shop ???)
I-5, Exit 199
2) S-Comm (Another Trucker shop ?)
Hwy 97 , Mile post 254
3) Radio Shop Inc.
4) Corona Radio Comm.
Good luck, maybe somebody else knows of a shop , I'd sure ask around down there, somebody must be installing Radios, try the local yellow pages.