I have only one fender that I'd be willing to cut up (passenger side), but it also looks like that the extensions that you had photos off are a bit different anyways. You might be better off finding whole fenders.
Here are some photos of the bumper. The chrome is mostly shot, but it's straight and could be re-chromed I think. There are two marks from a bumper jack on the bottom, but I. think that would be an easy fix. I had this bumper on my car for years. $100? I'm in Eagle Rock, CA 90041
I had a look at a local Australian Valiant which is what those panels are from, that has had a Barracuda grill etc fitted and it appears that they will work with what I have planned.
Are there mounting brackets come with that bumper?