Unfortunately South Australia is one of the harshest states when it comes to clearing defects, engineering mods and especially registering modded vehicles from interstate. Perhaps the buyer should have looked into this before purchasing. I'm sure the car will be able to get registered here but I have a feeling every mod will either need to be put to standard again or re-engineered from scratch which will take time and $$$... good luck.

As already stated, I can tell you are being a good seller by trying to help this guy out but the research should have been done on his part before purchase. Hope it works out though.