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car-part.com I just checked driver front fender 1976 Cordoba and there are at least 10 listed for sale from various salvage yards. They will put the fenders on pallets and ship to your front door if you like. Ask all of them if they have rear quarter panels. I’m sure you’ll find them too (but likely need a little metal fabrication). Can yours be “custom patched”?
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My RH quarter panel is really bad under the lower bend and the wheel opening, the left side is very nearly the same (not quite as bad below the bend). The front fenders could be OK with metal work behind the wheel opening. Thanks for all the assistance, it really helps