Think you'll find it's standard 16 and 17's only on the bling models like the Titanium. They are definitely 5 spoke and some Pathy's had the 5 spoke with the grove in the center of the spoke.
no i have the 2011 catalogue in front of me and all ST-X petrol or diesel dual cabs have 17 inch 6 spoke. what i didnt realise is that they only put them on the dual cab. the king cab gets the 16 5 spoke.
so i guess they could be off a king cab.