No the current Transporters are not made in South Africa. It looks like they now import theirs from the same plants that we do. In addition, South Africa also imports the large VW Constellation heavy trucks, and the large Volksbus tourist coach range, from South America. They must order right-hand drive models - I wonder why Australia doesn't import them too? You can see the South African VW commercial vehicle range at
http://www.vwcommercial.co.za/
All VW campers have walk through - whether based on the T2, T3, T4 or the current T5. Modern VW camper front seats can also rotate to face backwards. Check out the current Australian Trakka camper range at
http://www.trakka.com.au/home.html - they do camper conversions of the T5, as well as motorhome versions of the larger VW Crafter.
The Brazilian T2 is an interesting ananchronism but is hardly practical for today's market. The engine is just 1.4-litres. The suspension, gearbox, brakes and body are obsolete. They are only made in left-hand drive (the sliding door is on the wrong side). It doesn't meet modern safety regulations and would not comply with our ADRs (air bags are now compulsory here, for example). I don't speak Portuguese so I can't find the retail prices in Brazil on the VW webpage -
http://www.volkswagen.com/br/pt/modelos/kombi.html