In my '96, I had the CB mounted at the base of the dash, in the center (beneath the ashtray).
With the '99, the dash design was new and the cupholder assembly prevented me from mounting it the same way as in the '96. So I had it bolted to the center front seat frame pointing upwards from the floor.
I'm afraid I don't have any pics of either truck's interior.
In my 95, 98, 2000 and 2001 I had a bracket with claws on the bottom that just sat on the carpet tilting up in front under the cup holder. When they changed the dash design in 02 that wouldn't work anymore. I made a bracket that comes off the seat bolt and it sits in front of the center console straight up.
The top pic is the bracket I used to use on the CB in the 2G trucks, I use it for the 6 pack DVD player now in the back seat. The bottom pic is where the CB is mounted now