[OZVENOM]

If you intend to buy a (kit ) loose word.
You may want to ask for a few things you will need to get it registered . Well in Queensland anyway other states vary on what is required.
1 Beam and torsion test.
2 Fiberglass test
3 Lane change test
4 Bump steer test.
5 Door intrusion bar specs.
6 Brake test.
7 Seat belt mounts approved .
8 Steering system approved. The list goes on.

Normally a Kit manufacturer will have approvals supplied by an engineer for their kits which copies are supplied when you buy a kit.
The Engineer does not accept its Ok mate.
The big question has already been asked how many are registered? If lots then you are generally can buy with knowledge that you can get yours registered.

I don't think anything could more heart breaking than spending hundreds or hours building a cobra and not being able to register it .
The first thing i would do is contact an approved engineer and talk to Him/Her about the kit and the requirements for building then registering the kit.
Ozvenom (no affiliation)