Hmmm. Tough one. Could be an XU3 (14.5cwt) example, but these are very rare. Does it have interior light switches on the door? Is headlining original? Has the front got cutouts for the airdam (note HZ won't have GTS guards so the front must have been changed when the Statesman front was put on). It may just well be a very late HZ XU3 van.