i have them on the Duster. at first i thought they were off some GM car, but then i saw a pentastar and checked the fender tag. it was legit. those are some beefy looking calipers.
only if they are disc brake steelies. 4.5 doesn's sound like a disc brake wheel to me. i think they were 5.5. it is hard to tell the difference, but side by side you can tell a drum brake from a disc brake wheel.