My "new" '74 Duster- or why I need a project like a hole in the head

No center cap for the wheels?

Not yet. The rears aren't a problem, but the fronts are. I had the front rims machined to clear the hubs, so the usual caps will be too small for the new hub bore diameter. Plus they wouldn't have been deep enough to cover the grease cap anyway. I've got a few ideas, just haven't got anything finished yet.