So are they they the ones you have and don't like?
New Generation i30 already feature the Cobra parking sensor systems fitted at the factory.
That seems to be the case.
I have received an Email from UK Hyundai head office that my queery has been passed on to their technical people for investigation and they have promised to respond shortly.
I may be wrong about this - but my experience with them in 2010 trying to get cruise fitted to my last car suggested that the UK head office is a commercial - not technical- organisation. I finished up contacting Dancar in Denmark who manufactured the cruise kits to get a resolution.
We will see what they come back with. But I'm not holding my breath