20 Life became easier when the new drop off fit perfectly in the area occupied by the factory panel. The part was fitted, clamped in place, and then welded to the car. Later, all the seams will be sealed up to prevent water intrusion. This is a great time to seal up the car with a paint specifically made to stop rust. In our case we coated everything in POR-15. Some guy, decades from now, will be thankful we did this.