Whichever method you choose, the most important part is not to cut away the supporting panel or flanges that you will need to weld the new wing to. With the bulk of the old panel removed, any remaining bits of panel or spot weld studs can be easily ground away with an angle grinder to leave a smooth, clean surface. With all mounting edges clean, check for damaged\twisted areas caused during the removal operation. Once you are satisfied with the results, try the new panel in place for fit. Genuine manufacturers’ panels and most reputable aftermarket panels should be fairly.
