https://www.bisonparts.co.uk/ford-ford-cargo
http://www.solenttruckparts.co.uk/shop/index.php?main_page=index&cPath=78
For the rear lights have you considered using caravan/trailer type spares? Dunno how easy it would be to adapt to fit but an awful lot of commerciual vehicle and caravan/trailer lighhts just mount on a flat surface.
XXXX, July 2016