It is a "possible" Sandman.

Couple of points:

Should have fluted guards
Never had a GTS Grill Badge
Standard mirrors are correct for HQ
Clock was optional
Sandman decal were dealer fitted (or not fitted) as per customer request.

Trim 1870-30e Kingswood Black Buckets
Paint 567-15337 Metallic Sunburst Gold (a good sign) but still common to Kingswoods.