[boxhead]

Hey there Baz,
The rules for the NT are as follows.
First step is to fill out paperwork to apply to build the car, this is called :Approval in Principal"
Once a month the board sits and one of there "jobs" is they go through these forms and either approve or advise on requirements for your build.
Once you have approval for the build (Ie this form is returned to you advising all is ok) then you have 3 years from this date to complete your build.
If you do not get this completed in this time frame, you can apply for an extension, extensions are approved for a further 2 years.
From my understanding this can go for as long as you need (there is a GT40 being built in town that has been ongoing since late 80's and is approved to run quad webbers)
The application is free of charge and so are the extensions.
Of note is that once you make this application, you can then straight away apply for a Vin number (so there is no waiting for this once the car has been engineered)

Regarding street rod rego, I honestly feel this is the way that the Cobra community should be going, I think the cut off year is 1948?
I did look into the idea of street rod rego of my Cobra as a hot rodded AC Bristol, but the Bristol was not old enough.