Typically the minimum crank out on sheet metal parts is 1000 units {most factories will not even tool up for anything less than 1000 units}.
So the vendor invests a butt-load of $$$ to have 2 tools made & then he pays to have them stamped out & then he pays to have them shipped from the other side of the globe to get them here.
Now he has hundreds of thousands of dollars tied up in a pile of 2000 new fenders.
He tries to market them & all he hears is....
"They are too expensive"
"Shipping is too much"
"I only use original parts on my truck"
"These are cheapo Chinese parts"
I don't think that there are 1000 burb. & panel owners out there to buy all 2000 fenders & even if there is.... the vendor would still need to twist arms to get people to buy them.
That is why no one has reproduced them yet T.C.
So, Why doesn't the same analogy apply to the pickup truck front and rear fenders.
You would think the Suburban, Panel, and Canopy Express trucks rear fenders are more
susceptible to damage because of the lack of rear view when backing up.
Hence the need for repo's.
With the five window cab on the pickup trucks if you
smash the rear fender while backing up you shouldn't be driving.
There has to be more smashed single unit bodies rear fenders than there are smashed Cab bodies rear fenders.
