How about single thread for all vehicle suggestions?
Russian and USA vehicle are too obvious so I'll start with the militia and insurgents.
LIGHT MOTORIZED: UAZ-469
Versions: unarmed, armed, armed with improvised armor.
APC: URAL with improvised armor
Versions: with HMG turret, without HMG turret
IFV: BMP-2 (BMP-1 is rare for ex-Soviet countries)
ANTI AIR VEHICLE: ZSU-23-4 "Shilka"
ANTI AIR VEHICLE: URAL with ZSU-23-2
APC: Pickup with improvised armor
APC: Civilian truck with improvised armor and top mounted HMG
ANTI AIR VEHICLE: Civilian truck with C-60
ANTI AIR VEHICLE: Technical with ZPU-4 (ZSU-23-2 is too powerful for pickup)