I would think there would be more than 100 hq sandman vans. Probably less than 1000 as people were still buying hq Monaro coupes. By HJ , coupes were not sold in great numbers. Yes four door Monaro were being sold to family guys but the V8 utes and vans were the new hot thing by HJ . I’ve got a HQ 308 Sandman van and there’s another locally,both aren’t on any register. 100 hq sandman’s seems unlikely