Which Engine? Which Intake?

Engine Has 273 Adjustable Rockers on it and An Eddy Ld4b.
Does the Ld4b mean it's a Later LA?
Isn't the Eddy Intake for Early 273 Motors just called a D4B?
trying to figure out what is in this old '63 Valiant

View attachment 1716165426
Thats a big block. Distributor in the front:poke: