I think you can post a business name if just referring someone to go to them, free plug in other words. Unless your auto electrician is a bit shy to be famous... But you can't post business name in case of defamation (such as posting your bad experiences) as this can drag sau to defamation lawsuit etc, etc...
I'm of course in melbourne, but not planning to install one soon.
Just trying to get as much as business contacts for ppl who has done something in a skyline before (electrician, exhaust, etc, etc) just in case I need something in the future.
Inner melbourne would be great as it'll be easier for me to drop the car off on way to work and pick it up on way home.