I have a HQ Sandman ute that has been getting restored for yrs. (8yrs to get painted)
Looking on the guide you have listed, it shows the trim code suffix B. Mine is 1881 39E What does the E stand for?

I bought this ute from the 2nd owner in 88. It was brown/tan interior with houndstooth inserts in the seats.

It is a Kingswood ute, 80480, XX7, 5/74