Well Paul........... it's all available at the normal aftermarket places. Price Approx., with shipping, $550-$750 each. Better and cheaper to find local donors. Also, patching is what some of us do. A fender that already fits, fits. Several patch panels are available for your front and rear fenders.
All above is here >>>>>>>>>>
https://www.classicparts.com/ Located in the "MIDWEST".
You can buy donor fenders that need fairly easy dent/crack repair, and bang/weld on them yourself.
Lastly: Several times I have purchased whole trucks and sold off the pieces I don't need. Final price for my parts..$0
You need the space and the wife for that.
If you bought a truck that needs all four fenders, I hope you got it for a good price.
