Using LX (New Charger/Magnum/300) Wheels on a 74 Dart

Hmm, mill out the center of the R/T wheels like you've got on that Coronet in your sig?
Thats kind of a pain...
The 300 and the Magnum have exactly the same bolt pattern and hub though, which is the only reason why I'm confused as to why you had to do that...