Just to confuse the matter a little. I provided the HQ Sandman production sheet to the forum and it does appear to indicate a 220/140 speedo however the van had a 200/125 speedo in it from the factory. I recall my mate had a HQ GTS Monaro at the same time and he had the 220/140 speedo. I did not. Go figure?!

Also, the HQ Sandman brochure also shows the wrong motor - it is an earlier version than was installed in 1974.