Looking for black stealth running board end cap

I cracked one of the end caps on my left rear running board. This is an OEM running board called "Stealth Step Board" from the 2019 D-cab Tacoma that's been discontinued. I've contacted a few dealerships, they don't carry this part anymore and I can't seem to find any knockoffs online. Figured I'd ask if anyone here had any ideas or possibly knows where I could find one? Otherwise I think I just might just get rid of the running boards.

 

Use gray/black JB Weld to fix it? Where is the crack?

 

That picture isn't of mine. I just wanted to show the kind I'm talking about. On mine half of an end cap snapped off completely and I don't have it.

 

Bummer.