86 C22 Garhauer Deck Organisers size

Had my Garhauer deck organizer sheaves self-destruct yesterday on my 86 C22. Could someone please let me know what distance the bolts are centre to centre. Here in Australia and not sure I can get a replacement at short notice. If there's a model number that would be helpful too to seek a local replacement. Mine are galled into the backing plate and it will be a drill out exercise.

Thanks, Paul and Reflections