Does this overlay need adhesive, or does it bolt down?

It mounts at factory dash cap points. Test-fit before committing to adhesive or mechanical fasteners — mounting method varies by how the OEM cap is secured on your vehicle.

Can I paint this, or does it come pre-finished?

The overlay arrives unpainted. You can spray it to match your interior — standard ABS prep with primer and urethane will work. Sand lightly before primer for best adhesion.

Will this fit if my original dash cap has cracks?

Yes. As long as the underlying dash structure is solid, the overlay will sit flush over it. If the dash itself is warped or severely damaged, address that first.