1) google- punched in "1967 monaco rockauto"
2) on the site picked 383
3) then picked "brake & wheelhub"
4) then " wheel bearing"
Nothing to do with rear axle. But some of the listing's state which axle they'll fit.
W6 is made for canadian consumption. I'd assume it was built in Windsor, and should have the made in Canada tag in the door jamb. I'd also " assume" it's a 500 with the console.