I can't add much about the 2A era, but I worked for Land Rover in South Africa at Blackheath (Cape Town) and Mutare (Leyland Zimbabwe) in the late 1980s / early 1990s. The vehicles then did differ from UK build significantly.
This was mainly down to local content regulations to reduce the tax liability on the CKD units. Commonly, items such as trim doors, headliner etc.), glass, seating, wheels, tyres and so on were supplied from local manufacturers under licence. Also it was common to source brake discs and linings locally as well. Paints were obviously supplied locally and colours did vary. For example, my One Ten in Zimbabwe built in Zimbabwe was a lovely light blue colour which was not available as a LR colour, but was a colour used in Southern Africa.
It was common to supply One Tens without heaters on the 2.5 petrol and diesel engines in those days. A heater was a chargeable option being deemed largely unnencessary in most of Southern Africa throughout the year. A bad winter in the Cape might suggest that many users disagreed with ths policy...
Badging varied over the years. I have a collection of global assembly nameplates, but no SA SW badge. The chances are that unless it was deemed financially beneficial for marketing purposes, a SW badge would not have been fitted in the SA region as standard. the whole programme was to keep cost down and such a badge would normally have been deemed unnecesary. We have a very early 109 SW (Series 2) sitting on a farm near Kruger which does not have a SW badge, but we are unsure as yet if this one was built in SA or in Rhodesia at the moment.
I take it that your vehicle has headlights in the grille and not in the wings? On the wings without headlights, the pressing was only there for the side light and even when indiactors became mandatory, the pressing wasn't changed as far as I am aware, they just added a drilling to the wing for the second light.