Hi,
yes indeed this is a problem, they deliver in Europe only, but I saw on ebay.com.au a Polish dealer who delivers Luk clutches to Australia. Maybe you can ask him for this LuK kit (623 1221 00). There is an another Australian dealer with LuK clutches (Sparesbox).
I read in the workshop manual that there has been some changes for
- pressure plate, 2 different: A0002502904 --> A0002506804
- clutch plate, 3 different: A0042501703 --> A0002507203 --> A0012501103 and
- release bearing, 1 different: A1272540120 --> A0009814325; release bearing with body: A1112500115
in early phase of 230SL. From 1965 they had all the new version.
...WRe