Your carrier is a 6 pounder anti tank gun tractor. The tow hook is the give away.
Have a look at the 'Men of Steel' thread <
http://www.mapleleafup.org/forums/sh...&threadid=9596>
to see the back of Ross Hopkins's one which has the ammo rack that mounts across the rear plate.
There are not many of these in captivity.
Rob
ps regarding camo, Kiwi carriers were boring old green!
see these ones at Masterton in 2003
<
http://www.mapleleafup.org/forums/sh...s=&postid=7459>