The Agora Shelby is actually 'the same' as the DeAgostini kit.
Neither company 'makes' the kits.
The manufacturer has modified some of the kit components, and created some new ones, to make the Super Snake.
The up-coming 'Bullitt' car will be the same.
The new E Type Jaguar roadster from Agora is exactly the same.
The same 'basic' DeAgostini kit, but a new roadster rear and screen scuttle, and modified seats.
The rest seems (by available images so far) identical.
Sadly, the Cobra has no interest for me as I just don't like the actual car.