where can i get a pcv mesh filter for my 71 Z ? Or is there something better than mesh ? thanks, timsz

Two ideas:

1: Get a thin mesh screen like those used in MAF at a hardware store.

2: Use an air filter type of material.

In either case, just cut to size.

Call your Nissan dealer. I bought 3 brand new block filters a month ago. $12.00 a piece.