Lock-Up or Non Lock-Up?

Topless69 said
View attachment 1715676641 I’m looking for a lock-up 998 or 999. Found this in a 78-79 Diplomat
PK3410779A 3258.
Does anyone know if this is lock-up or non lock-up

1970 A,B,C,&E bodies with a 318. Not a lock up. Made at the Kokomo In. plant.