I've got a couple of sun visors that I am looking to reupholster. They are from a 1988 Daytona and they are the ones with the illuminated mirrors. The original material has fallen off, and it looks like the underlying plastic substrate is 2 halves that are "snapped" together. However, if i wedge a screwdriver between the halves, they dont seem to want to come apart. Has anyone ever taken one of these visors apart? I dont want to break them if there is some other technique.

Thanks!
Dan