https://www.********************************.com/en/catalog/porsche,2003,boxster,3.2l+h6,1417924,suspension,st abilizer+bar+end+link+/+bushing,7580
That is a link to the ******************************** page listing after market drop links for 2003 Boxster which are the same as for the 2004. Not sure if you have a similar outlet in SA but Hopefully this gets you started.
Fill in R O C K A U T O in place of those asterisks no spaces. Or go to the Pelican Parts website and see what they have. Pelican sponsors this forum so referring to anyone else generates all those asterisks.