Hi Adam.
I`m not sure that that do.
Transits and Mondeo`s had steel 16" but 5 stud obviously.
But... Peugeot and Citroen fitted full size steel spares to a few of their 16" wheel models.
heres some, http://www.ebay.co.uk/itm/16-Wheel-SET-OF-4-for-Peugeot-Citroen-6-5J-4x108x65-1-ET26-/261641235727?pt=UK_CarParts_Acc_Wheels_tyres_Trims_Car_Rims_ET&hash=item3ceb086d0f" onclick="window.open(this.href);return false;
Offset would be wrong, but if your getting them banded its not really an issue.
Also, you would need to check the bore and have your fabricator ream out or plate up the hole to suit the Puma..
Hope this helps, stu..