just done the upgrade, you want 2wd disks with 4x4 calipers and carriers, if you can hang on a few days im getting some calipers so might be able to get some disks and sell you the lot if your interested! Deffinately get better pads, but at£70 bucks for 4x4 pads they aint cheap!! All this will fit under 15" standard wheels unless you got massive wheel weights on the inside of your rim! excellent braking once bedded in properly

disks/pair
Ebc=200
standard=90