I am a wargamer with some modelling skills. I would like to build a couple of British and German vehicles, in 1/72nd or 1/76 scale, to act as vehicle and tank recovery from the western desert battlefield. I have the SHQ and a Trux Scammel SV2, a few Airfix Scammel tank transporters and a tank transporter from SHQ. I would like to build a couple of gantry lorries for this purpose, (LAD vehicles?) I am aware of the use of the Airfix Emergency set for this job but do not have any pictures of the interior of the flat bed or the crane arrangement, (except covered with a 'I' section beam sticking out of one or other end). I would be able to scratchbuild such an arrangement but would prefer to source a complete item. The german version, I assume, is a halftrack with a bilson crane, would I be correct in this?