1. Before installing new parts, drill holes for plug welds in advance. In areas where the outer, reinforcement, inner, etc. are in 3-4 layers, drill holes for plug welds in all but the innermost panel.
2. Welding of (B) should be performed during installation of the rear fender panel.
3. Welding of (C) should be performed during installation of the rear pillar (outer).
4. Welding of (D) should be performed during installation of the corner plate.