Originally Posted by
iansoutham
If you have rust around the filler cap, then I would recommend replacing the whole 1/4 panel regardless as the rot will be where you cannot see it. Once repaired, it will only find a way back where as a 1/4 panel means a better-finished and (hopefully) longer-lasting job even if it does mean taking longer.
thats why i bought the quarter panel, the bodyshop said it will eventually come back, the best thing to do is replace the whole thing.