if a sandman has had its chassis replaced and it no longer has a corresponding chassis number to the chassis number stamped on the main tag then it can not be called a sandman by the fact that the numbers no longer match..
so if its an hz sandman and it has a wb chassis under it with wb number then it is a wb and no wb vans or utes were sandmans ..
same principal if it is an hz sandman and its got an hq chassis under it..
at one stage in its life it was a hz sandman by the tags that are displayed but as far as any registration authority is concerned its an hq now..so it cant be a sandman..