If it has a vinyl top, or a lot of chrome, it needs more then the body color painted wheels. I've sported many with the Mag 500s, and many with the 70s Road Wheels and the screw on center caps & trim rings.
Not a big fan of hub caps in any form, just give me chrome lug nuts and send the caps down the road. If it still has the black painted wheels, unless they are at least 7" wide, they just have to go.
I like most mag wheels, but they too have to be matched to the car, some cars just don't look right with some mag wheels. Gene