Have you checked with AAFES? I don't know if they have them for the DAK
since I don't think that's sold over there, but they do have the special
European headlights and taillights for Caravans and Jeeps and PT
Cruisers, all of which which are sold over there. I had ordered a
taillight for my Caravan once in the UK and instead of getting the US
version, they sent me the European version with the built in rear fog
light, so then I ordered another for the other side because I liked them
better.
The other option is to order a bolt-on sealed beam headlight from J C
Whitney and bolt them to your front bumper. You could then replace the
US sealed beam with the left-dipping sealed beam sold in the UK. I had
them on my Caravan. Here's a link to one that J C Whitney sells;
http://www.jcwhitney.com/autoparts/Product/tf-Browse/s-10101/Pr-p_Product.CATENT
RY_ID:2003807/showCustom-0/p-2003807/N-111+10201+600002821/c-10101
They have some with left-dipping lenses available in the UK also at this
web site;
http://www.s-v-c.co.uk/SVCHEADLIGHTS.HTM

JPH