I did part of my PPL at Virginia Flight School, Durban in December last year and they were really good. I also spoke to a guy called Greg last week about doing a similar conversion albeit I havent got my JAR CPL yet and they were very helpful. The info they gave me was more for converting my JAR PPL to gain a SA CPL and then coming back this way (UK) so I'm not sure what they'll suggest byt they're really helpful. Contact details on
www.vfs.co.za