I've noticed that some cowl vents have a square wire mesh under them and some don't. Is there a specific year that these square wire mesh was added to the vent intakes?
Just wondering...

I believe the mesh came on in 74.

I think 72 and earlier did not have any grill.
The blower box lacks the shape at the top to accept a grill.

You can add it to any car, it's just a matter of the seal on the top has a grove the screen sits into. It's not a fun job , but if it's already apart your 1/2 way there.

late 73 year started the Plastic cowl vent grille

Does anyone have one for sale? Looking to install on my 73.

Got them with the larger seals that will not roll over as well as the complete kit -
https://914rubber.com/search/?q=air+vent

>>4732924928