Yeah thats my next port of call. I had a hq pv back in early 90s and we put a wb front on it with gts dash did it up tottally. I remember wishing I had a sandman back then so it just seems weird that this van been painted up and prem front with all the chrome on it under the bonnet that someone would standardize the interior bits. Everyone is contradicting each other by saying the M is for sandman, or the combination of diff ratio color and trim etc says it is. Then others are saying only the lining and console mounts will tell you. I would have thought holdens would have a tag indication to tell.