I'm with you on Holden doing the brochure photoshop, in fact the picture of the van with tailtent the HJ brochure you put up above, I think appears again re-touched as a HX Sandman (maybe in the HX commercial brochure- I can't remeber off hand).

The earlier point I was making about brochures is not to trust them but plenty of restorers would have which would potentially lead to beliefs that something was standard.

Yes Dad's is forced air. I doubt he would have ordered it as a option, but will get him to dig out his order details. I know he also got dwell wipers (supplied standard only with 308 -optional on rest) so I was wondering if forced air falls in the same boat?