Years ago when I was still working as a wrench I had a customer come through with one of those Stealth Bomber E-bikes, that thing that is kinda a bike and kinda a dirtbike. https://stealthelectricbikes.com/
Anyways it had a set of those Gator 16 pots on the front and a 8 pot on the rear with 9" rotors before that was common, funny enough it was in for a brake job to get the brakes swapped out for a simple set of Saints because the guy wore the pads into the backing plates and couldn't find brake pads. It was a nightmare of a job to do the retrofit. I was hoping the guy wanted to junk the brakes post install as they were shot and useless but he wanted them back, offered to buy them off the guy as a collector piece and he said he would call me back. Never heard back.
So there is a chance there is a set of those floating around the Calgary Alberta area somewhere.