1st Gen Tacoma Fiberglass TRD Wheel Arches -- HELP! :(

Hi!

First time posting here, but I'm running out of options and figured someone might know. Did a search of the forum but couldn't find the specific result I was hoping for.

I have a 2000 TRD Pro Tacoma and it recently met a deer

The repair shop has been progressing with repairs, but is having trouble locating the reinforced fiberglass wheel arch for the rear-right wheel at the bed. I was trying to help them and found some different part numbers online, but they spoke to a local dealer and the parts shop told them Toyota doesn't make them anymore. The 4WD TRD model seems to be unique and what's available only seems to be the ones that came on the 2001 and beyond model years, which appear to be made of plastic.

The shop sent me a picture of the back of the wheel arch, and there appear to be 3 different numbers:

75087-35040 ASSY
75873-35040
75873-35900SP

Did a number search online and potentially found the correct diagram and part based off my truck's config (TRD, 4x4, Access Cab with jumper seats and 2 doors)

Am I out of luck in finding a new replacement from Toyota? Any help would be appreciated!