Try contacting the folks in the after-mentioned link, they may have be able to help. http://mmb.maverick.to/resources/maverick-comet-restoration-fab-direct-sheet-metal-parts.241/
Whoops.. my bad. Just put 2 and 3.175 together figuring you wanted to do exactly what cruzin did. If that's the case then the link mojo posted will set you straight.
Yes...I meant the outer wheelhouse....not quarter. My bad. Post up pictures, in your own thread so not to muck up this thread any further, of your outer wheel house so we can best advise.