Will this patch panel work??

[kev2809]

hey guys, i have rust in this area here...
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its the area between the wheel arch and the third door. will a fender area work here? im talking about the corner that meets the door to the beginning of the wheel arch. they look the same, but not sure if they contour the same down at the bottom. i have a fender thats pretty much scrap but is good in this area. and also, will the wheel arch from the fender work to fix this?
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the repair panel didnt have the edge imprint on it. so i was wondering if i could out the fender arch and weld it in here, just the little piece, not the whole arch