Yes, that whole assembly can be disaasembled for restoration. However, the handle will be a lost cause as the pin that holds it to the rod is pressed in from one side. I don't think many of us have come accross 67-68 e-brake handles that weren't broken. Are you sure yours isn't at least cracked?
To take the handle off of the rod, you need to drill a hole through the handle on the opposite side of the pin and then hammer the pin out. New handle goes on and you hammer the new pin in place.
Regards,
Pete Morgan