1. When joining the new and old parts, temporarily install and fit the new part in position, measure each dimension according to the body dimension, then adjust the position to align it to the standard dimensions.
2. Drill holes for plug welds before installing new parts.
3. Plug the 38 weld locations indicated by (A) during installation of the side sill reinforcement.
4. After temporarily installing new parts, make sure the related parts fit properly.