with the mirror thing you are correct if the vehicle did not come out with them when made it is not compulsary. i had a xm falcon they i did up some years back it did not come out with mirrors or seats belts. i thought there was no way to get it regoed but found that i was ok. (front seat belts were installed for my safety but the back seats were free as a bird). if worst somes to worst qld transport can inform you of the rules and regs