Each component must be compatible with the others.
A Chevrolet motor will not connect to a Ford gearbox without some additional work and possibly custom made adapters for example.
Any modifications proposed need to be checked to see if there are any Engineering issues. In line with this issue the "build" has to be registered with the ASRF, the Australian Hot Rod federation. And a plan submitted to them. along with drawings of chassis modifications, drivechain changes and body alterations. They will asses this and if all is in order a PTB (Permission To Build) is issued.
Most things are possible but if there is a Master plan before starting some of the pitfalls can be avoided. And if there are parts to be used that do not match then the solutions can be thought through and added to the overall plan.
When the PTB is approved work can proceed. There are three mandatory Inspections along the way to ensure all work is up to the standards required.
So that is where we are at this stage, Planning.