59 Impala convertible, 3-stage candy red with slight gold pearl, full custom black leather interior
I have recently acquired a Turboglide trans and need help identifying what year it was made. Below the word Turboglide on the case are all the patent numbers but I don't see any other numbers. I know they were made from 58-61 and there were changes made throughout production so it would be great to know what I have. I've done some web searches but no luck so far. Can anyone help?