A quick and easy cheat for you if you want to get into Winter of '79 with little fuss is this Oxford diecast Land Rover Defender in Berlin urban camo scheme.
The Defender went into production in 1983 but the demands of conflict may have seen it brought out sooner. For some of you a Land Rover is a Land Rover and it won't matter anyway.
Being hard top it makes a great proxy for an armoured Land Rover. A bit of wire mesh on the windows, headlights etc - job done. Yes, I know the spare tyre should go on the roof but it leaves an unsightly indentation in the bonnet. Let's go into 'squint' mode and say it's a rush job by the local REME to meet the huge demand for internal security vehicles.