Is that the fender? Or is that behind the drivers door?
I can cut that piece, but could you get me a larger view with some lines and dimensions on it? I don't know the extent of the damage or where you want to weld.
Maybe it would be easier for you to replace the entire quarter panel (I can cut up from the taillight and up the seam under the door seal).
PM me some info, can you pick this up or will I have to ship it? If you can pick it up, you can do the cutting yourself. Otherwise I will need more information and it will cost you something for shipping.
EDIT: I didn't list this quarter panel for a reason, you will have to decide if the rust will be a problem.

The rust goes through the outer layer, but not the inner layer (could be fixed with fiberglass or a small piece of steel without much warpage).
Just let me know more precisely what you have in mind.
Anything not listed in the add is free to a good home (with the exception of the passengers quarter panel, which a buddy already got). Obviously shipping will have to be paid by you.
If that is the front of the drivers fender, I think that I have that piece in good shape (I will look tomorrow).