The Wassell stator was sold side by side with the Lucas boxed product by them for a while, they were not the same product, and are still not the same. Try fitting the new 3 phase Lucas stator to a MK3 - it does not fit, the old wassell one did.
The Lucas single phase stators I have seen arrive lately are better, though still not quite there on quality, but getting better.
Strangely, an indicator lens with LAP on it sold in a clear bag with no box, it seems that the public will not want it, put in a Lucas box and it will sell, it's the same item!