wiper cowl vent delete
if you are going to use fiberglass as a patch, you have got to get ALL of the rust out first or you will be doing it again in 5 yrs..
at least thats what I'm seeing on my car from the previous owner, he did some patch work and didn't get all the rust out and it came back.. I could peal up the edge of the patch and it just came out as one piece.