I had one correct 58 door latch and a few later Bugeye door latches. I just repklaced the short lever with a longer lever and welded it on as original. It's just 1/2" steel from the metal rack at home defect or any hardware store.
I came very close to making the glitter coated handle too.
I just put some craft store glitter into a thin, tall glass jar of melted hot glue sticks. I had the glue slowing boiling to mix the glitter evenly, dipped the handles in the jar, let em drip off and they look almost as good as new, just a tad thicker than original.