Daniel from Spain has been thinking of replacing the door locks on his Opel GT with those fitted to the Opel Manta A series. I have looked through the Opel Factory Parts Catalogues and the part numbers are different for both cars and checking out some videos on YouTube they don't look quite the same.
I wonder whether the handles and locks used for the Opel GT were sourced from the Opel Kadett B series that it is based on? If anyone can help clarify the situation please get in touch, for the meantime here are some pictures of the handles and locks fitted to the Opel Manta A series.