Brakes - you can go the DBA slotted rotor and new pads path to fit under the stockies, or you can do the '5 stud' hub upgrade which hasnt quite yet been finalised.
Info on the 5 stud upgrade is at www.eds.au.com
You will require bigger rims to fit bigger brakes. The 5 stud option allows you to access a greater array of mag wheel options in larger sizes.