WTB: 58 Big Truck Fenders

[LILREDGMC]

I've been off this site for a while but am still looking for a left front or will consider a pair of Large truck fenders. The left front has lip issues down low, and an eyebrow that is deteriorating. Would like NOS but who wouldn't or consider a set of western rust free fenders. I had found a set of 57 single headlight big truck fenders but was told I would have to change core support and I don't know what else.

These would be for a Viking 40 truck. It is a tow truck and I can now get some digitals if someone needs a view of the large fender. I did look at a school bus in Utah, but it appeared the fenders were different.

If anyone has any cross reference information I'd be glad to learn what the year interchange is, or what it takes to put 57 fenders on a 58.

Thanks for any information.