pedestal

I'm looking to install a pedestal seat for the port side of boat. The owner had sent the back to back seats out for reupholstering and never got them back. I like that the back is so open and will keep it that way but need another seat for a passenger. The question is I saw somewhere, either...

Hello everybody, Im new here but was hoping you could help. I have been trying to figure out how to find attachment plates/swivels for new seats that will mount to these pedestals. See pictures attached. I believe they are the originals but am not sure if they were modified or cut by the...