I capped my dash today. The fit wasn't exactly perfect around the gauge cluster or the passenger vent, but it should turn out just fine. I cut out most of the speaker grille but left the "structure" part there since it was still solid. If you remove the speaker and look at the dash above it you'll see there are two extra thick ribs between the sets of holes in the speaker grill. They just barely give you enough glue in the tube. A bigger tube of glue would be nice.
High spots cut down, dash and cap sanded, cleaned, cap pre-fit, glue applied.
Clamp, clamp clamp. clamp.
Clamp. clamp, clamp, clamp, clamp, clamp.
Tomorrow I'll take the clamps off and see how well it turned out.