WoW thats a lot of work > How commited are you? Remember new computer/s will be required then all that needs to be reprogrammed into the body control unit at holden or tech two which means a tow there...Might be better off buying a half cut front end then its all there. In my op You will need everything from radiator back to, including the tourqe converter.
The Brake Booster may need to be replaced with a V8 booster/master set up.
Im not sure but you my need Prop shaft (different length?)
Engine mounts
Over flow bottle
V8 cooling fan set up
Air intake/tubing Map sensor.
V8 oxy sensors/exhust
Power Steering pump and tubing?
Air con Tubing
Shocks/springs will need to be suited for V8
Whats your Diff? LSD?
Thats what i can think of for now.....
I dont mean to dishearten you but it is a lot of work. But if you do have a great passion to do it go for it as there's no greater pleasure to a driver who has put his own motor in. I BUILT IT!! Cost if you shop/bargain for it 6K I rek.
Might be an idea at lookin at doin a trade? that might be cheaper?