11.75 dia. rotor conversion

I want to convert my 67 Barracuda over to 4.5 bolt pattern discs and while I'm at it go with the bigger rotor.

I know I need a different spindle so is there a car that would have the spindle and bracket for the larger rotor as well as the larger dust shields I need. Or am I going to have to get parts from a couple of different cars to get this to work?