Mesh needs to be fixed in to a model

All these spots red aren’t needed, so you can just make them smooth with the body.
doesn’t have to be ultra accurate, just chasing the shape, so I can give it to the designer and mesh it together with the existing design, I need it really fast ,Please bid fairly as i have more works . https://www.dropbox.com/t/4cadXXWucOqZZIkI