will a 82 280zx crankshaft pulley work for my 78 280z?

i know a guy that has one and if it works im going to buy it from him.

saw a post on here saying they were and apparently the 3rd belt groove can be unbolted. does anyone have one for sale.

You can buy 'em new from Nissan.

i really wish i could, but i cant afford it. i was looking to get a used one for around 30 bucks.