Original? I'd make the effort
Howdy Tug,
On a patinaed/original looking machine there's nothing like original fenders and color/hue of their appearance is rarely matched by any reproductions. That said, you can click my site in my sig, scan down to
..a few tips, select
chassis and review the
Fenders (Birmabrite) piece or just click
here. This is what I did to resuscitate my dented and pitted originals.
I can't emphasize enough, and it's often been mentioned, that you really only get one shot with bringing pitted ones back to any degree as they're thin and any substantial metal removal compromises structural integrity, especially for the forward section of the rear fender. I'd be inclined to take the more laborious route of wet/dry as opposed to heavy cuts made with a stand mounted buffer.
Good luck.