Hi Bartolo,
Here's the information from the build record:
83S2973 SMB4 Spoiler Exploiter
top: Bird's-eye Maple
body: Mahogany
neck: 3-piece Maple, 32 medium scale
fingerboard: Ebony, pearloid inlays
pickups: 2 Alembic AXY
controls: Spoiler volume, 4-position rotary pickup selector switch, filter, 2-position Q switch, mono output
birthday: November 18, 1983
originally made for: Zapf's Music
This bass was repaired in September of 1984 before it was sold to the original owner. The truss rods has a failure and could not be loosened. The fingerboard was replaced, new rods installed, and of course if was levelled and fretted.
It was sold to the original owner a couple of months later in December 1984 to a person in Pennsylvania.