Cutlass V8-350 5.7L DSL (1984)
FIGURE 10 - TOP STRAP ANCHOR INSTALLATION - OMEGA 2-DOOR (37) AND 4-DOOR (69) NOTCHBACK STYLES
STEP #1
From the trunk area locate the appropriate 8 mm (5/16") hole on the underside of the filler panel.
STEP #2
Using a punch or other sharp tool, punch a locating hole through the center of the trim covering the 8 mm hole.
STEP #3
From inside the vehicle cut a 8 mm (5/16") hole through the filler panel trim using the locating hole as a guide.