We may be sheet out of luck on that part #.
My youngest son said he kind of remembers mom telling him to toss that box.
That would be the one with the old rotors.
However, as soon as it warms up a little bit, I have one more place to look.
Knowing her and having to work around and over the box for several years, I could see that being her response..... She isn't a pack rat like I am.... I have so much junk in the back garage, I don't even know what is there, till I come across it and ask myself, who the 4377 was looking for this or that.

I still have 14 boxes clothes, house utensils, coats and a big ole console TV, that still works, we pulled out of my mom's apartment when she passed away in June 1992.
Should just give it all to DAV, Goodwill, or some Charity if they come get it, load it and keep their damn big truck off my motorcycle thin cement driveway. This driveway was designed, built and poured only thick enough for motorcycle traffic.