Banjo, I haven't followed this thread, but I did come across a couple of potential sources for fenders. This is from a club ad i found on the information super hiway;
Ken Kernick's STASH
Ken Kernick (1st club president) is moving to smaller digs and I've agreed to help sell his remaining TRIUMPH parts. Note that the NEW parts are less than 1/2 the current price and no shipping/taxes!
TR2-3B: NEW front fenders,$800 pair.; good USED left rear fender $200; NEW hood prop rod $25; new factory A-posts/B-posts $400 set; USED rear springs, $75 pair; good USED gearbox cover, $100;
TR6: NEW original style gearbox cover, $50; USED gearbox cover (covered in fibreglass), $30; NEW spare tire cover, $60;
Original TRIUMPH dealer PARTS manuals, various conditions (TR4, TR4A, Spitfire Mk3, Herald, Vitesse, 2000/2500), email for picture or details;
Spitfire inner sill, NEW, $20. I also have a number of body parts from a "late" TR2 that was dipped and stripped (hood, $200; trunk lid, $150; left door, $75; right rear fender, $50; gas tank, $100) as well as some NEW parts (rear valance, $400; side trunk closing panels, $100 pair).
Parts are on Wolfe Island.
Call Brian 613-385-1947 or
thomasb@queensu.ca (May 07)
Another possibility is listed in the Hill Country Club newsletter
https://www.hillcountrytriumphclub.org/newsletters/0705.pdf