Are you looking to keep the stock look or change it up for a new? I found a set of billet aluminum bezels and pulls years ago. Omix ADA has reproductions or you can usually find a set of OEM on eBay.
It’s been awhile, but I believe I put a pair of vise grips on the metal rod and worked the old knob off. They are just press fit on. Once the old ones are off, the new ones have a small Allen set screw on the bottom. Lock tight those little screws. They tend to work themselves loose.