Just in case anyone's looking for an alloy radiator at the moment, I'm selling one on ebay (ends Saturday 27th September 2014) -
http://www.ebay.co.uk/itm/1414139915...84.m1555.l2649
Core is 350mm x 350mm x 40mm, and it wasn't
quite big enough to cool my Vitesse 2 litre six. Ideal for a four pot Seven or similar though.