Modern Mopar rear axle question
Are you thinking about swapping in the independent rear suspension? That would be a very cool project. I suspect that you could run shorter half shafts if you needed to narrow the track.
Looks like you Would have to narrow it quite a bit. This link shows the rear track to be 63.1”. I’m positive if this is hub to hub or if it includes wheels.
2007 Dodge Magnum Specs - iSeeCars.com