You should know that for 62 and 63's Ciadella has now produced the correct size chrome buttons for all their interiors -seats and door panels.
We found that out when ordering a 62 Belair interior for a friend of mine. They where also very helpful with the correct color headliner for this red interior belair-we got samples and different types to pick from. We forgot to have them take care of the recangular painted pieces on this Belair door panels, they make and install them, and we forgot to ask for them -so got them from Ciadella to install on the door panels
Paul