https://www.kijiji.ca/v-engines-and-engine-parts/hamilton/1955-1962-chev-pontiac-6-cyl-oil-bath-breather/1356427758?enableSearchNavigationFlag=true
Also offered as RPO option K45 through 1967 on the Chevrolets & "our" Pontiacs with inline sixes.
Shown below on a '66 Strato Chief:
67 Chevelle Malibu Sport Coupe, Oshawa-built 250 PG never disturbed.
In garage, 296 cid inline six & TH350...
Cam, Toronto.
I don't judge a man by how far he's fallen, but by how far back he bounces - Patton