What I can see so far in the radio rack picture is:
Top shelf left: fire extinguisher
Top shelf right: AN/GRR-5 receiver
Middle shelf left: RT-524 transceiver
Middle shelf middle: R-442 receiver, C-1439 control box mounted to center beam
Middle shelf right: RT-441 transceiver, part of AN/VRC-24 set
Bottom shelf left: AM-2060 power supply with AN/PRC-77 backpack radio
Bottom shelf middle: unknown power supply or switch box
Bottom shelf right: LS-454 style speakers mounted to center beam
Misc in back of truck:
TA-312 field phone
SB-22 manual switchboard
field phone cable on reel
misc. radio and antenna accessories
So, now you know what you need to complete the setup, at least as shown in the photo.