Drive Train Upgrade Suggestions

Oh oh, You didn't give a budget. My thoughts would be a 5.7 Hemi drivetrain to an 8 3/4 rear, (you likely have a 7 1/4 rear in there now). Stock 8 3/4 rear can handle 275/ 40R17 which is a fair bit of wheel without customization. Make sure you have large bolt pattern axle in the 8 3/4 for better wheel options. Small bolt pattern wheels are scarce and expensive.