what does a 78 Fury wiper park pieces look like? Customers car is missing them

We got a customer's 78 Fury cop car in the other day-the guy's trying to put it back together and I'd like to help him.It's missing the motor end's lever insert pieces . The vin in case you ask starts off as RL41U8A-------.it's a very clean ride but needs a lot of little stuff because the people that painted it were a bit reckless. Any help is appreciated!

What are wiper park pieces? Can you take a pic of what you're referring to or where it is located?