Depends. There were two designs. If you have the later design, they have the same part number. (Check the table in the link I provided) If switching designs from first to second, you will want to swap the brackets as well.
I have never messed with the ESC on an '82, so I don't know from first hand experience. The '82 GN's were later in the model year, so maybe they are already the second design. I would look for the 16017464 number somewhere on your ESC module.