80v8Cutlass

I want to replace my interior and have a donor car, the question is i have an 80 the donor is an 81 (havent paid for it yet so cant test fit) will the interior swap over? Ill assume it will because they look the same but i wanna double check befor i do anything else.

80v8Cutlass

oh dunno if it matters but both cars are 4 door.