Ive got a few suggestions for some cold war era vehicles that don't get much attention.
The M-1009 CUCV (Basically an version of the CUCV but with an Cab)
The M-561 Gamma Goat 6x6 Semi Amphibious https://en.wikipedia.org/wiki/Gama_Goat
ASU-57, Soviet Air Dropped Assault Gun https://en.wikipedia.org/wiki/ASU-57 (would be great to use something other than an BMD)
ASU-85 another air dropped Assault Gun https://en.wikipedia.org/wiki/ASU-85
BTR-D air dropped multi purposed APC https://en.wikipedia.org/wiki/BTR-D
The GAZ-66B, an air dropped version of an GAZ-66 Truck https://en.wikipedia.org/wiki/GAZ-66
BAV-485 (Soviet Copy of the DUWK) https://en.wikipedia.org/wiki/BAV_485
M-1010 CUCV (Ambulance Version of The M-1xxx CUCV)
M-1031 CUCV (an basic utility version of the CUCV could be used as an repair vehicle)
M-880 CUCV (the earlier Dodge CUCV)
M-886 CUCV (Dodge CUCV Ambulance)
M-887 CUCV (Dodge CUCV Maintenance)
Cadillac Gage Ranger (Built on an Dodge Truck Chassis this armored vehicle was used by USAF Security Forces for base defense and patrols, it was in service from 1979 to the 2000)
An T-62 Tank, and Variants (it would be great to see an actual T-62 in game) (Obr-1960, Objeckt-166K(command), TO-62(Flamethrower), Obr-1975 (with laser rangefinder), T-62M, T-62M Obr-2020, T-62MV Obr-2022)
An BRDM-1 (Armed, an Command Variant, one with AT-1 Snapper ATGMs, one with AT-3 Sagger ATGMs)
BTR-60P Command Variant
BTR-60P mortar carrier.
Communications Versions of The BTR-60