Welcome to FP Section25.
You have the start of a great project my friend, take your time
I will try to answer your questions a few at time. Let's start with the basics, you have a '63 Pariseinne, which means this car was probably built in Canada and then converted to right hand drive once it got to Australia. So that most like means that you have a Chevy drivetrain, suspension, chassis one a Pontiac body. I didn't see any pictures of the engine compartment, but that would be consistent with Canadian built Pontiacs of the day.
So you will want to get a radiator, ignition/distributor parts, power steering pump, transmission kickdown cable, brackets, etc., that are consistent with a '63 Chevy Impala (in the US) with a small block Chevy V8 (not the 348/409).
Rubber vacuum lines are used to distribute some of the vacuum created by the pistons on the intake stroke. It is used to advanced the distributor based on engine speed, power assist for power front disc brakes (connects to the brake boaster), connects to the PCV valve (if your car as one).
There are modern electronic shift kits that allow you to shift the transmission electronically. You can find it in most hot rod catalogs.
You need some sort of fan to work with your radiator. It can be electrically driven like most modern cars are today, off a water temperature sensor and some power leads, or the regular stock water pump attached fan will work. You need some sort of fan to cool the water, especially when the car is idling or running at high speed for a long period of time.
How is that for starters?
Pictures of your engine bay will help a lot too.