how much of a difference would it make that these are Westland - built examples? And presumably most are from the last (attrition) batch from the 1980's that were knocked up at Weston-super-Mare, several years after the main production run at Yeovil. There were lots of comments at the time at Yeovil was that they were significantly different in body parts, though no-one ever seemed to publicly say how
I believe only five of the ZAxxx batch of Pumas are still in service, so presumably most of the HC2s will be from the original XWxxx batch.