Just wanting to know if its possible to install power steering on the bathurst model 1996 mr2 and where i could get one cheers :)

Quite a difficult job to do. Rack mount in chassis needs to be moved. Steering column and sensors are different. Need to cut holes and then mount pump and reservoir. Tie rods and knuckles I believe are also different.
Just learn to drive your Bathurst as is. They already have really nice feedback and once aligned properly are delightful to drive.

Why do you need power steering?
 

Remove spare tire from frunk, and suddenly your steering is lighter and car faster :)

Recommend road side assistance and can of tyre inflate :)- never remove spare tire on long distance drives into the never never :)

With slow speed maneuvering like parking, cars with manual steering require a different technique to those with power steering. 
Never try to turn the wheel if the car is stopped.
The car must be moving, if only slightly, then it is much easier.

Apart from being a difficult job to do I think you'd be taking away from the character of what a genuine 'Bathurst' is. Sure you could order then with power steering but the whole thing about the Bathurst was the spruiked lightness.
 
Not many of them left, you'd probably decrease its value.

An alternative is a Toyota Yaris electric steering column. Have seen them used in a few non-mr2 builds to get around power steering swaps