Cache is located at South 33 24.AB3 East 149 33.CDE
The grave below is located in Bathurst Cemetery

When you locate the grave, take note of the grave to the right of the headstone. That is, when looking at the grave in the picture, the grave with all the information is on your right.
Now this grave to the right has all the answers to the missing co ordinates.
A= 4th word on headstone, number of letters. Add 1 to answer
B= 6th word on headstone, number of letters. Add 1 to answer
C= 10th word on headstone, number of letters. Take 1 from answer
D= 3rd word on headstone. Number of letters. Take 2 from answer
E= 10th word on headstone. Number of letters. Take 2 from answer.