Bit of an update (I can only tinker with this on Saturdays....)
Today, I had off as I had a Dr's visit so removed another wheel and I THINK we've finally figured out all the numbers.
Bearing is a Timkin L44645 and the race is L44613. Did an Amazon lookup and as a pair, looks like it's $159.
I've been to two tractor locations (Kubota dealer and John Deere dealer) I've been to four auto parts locations.... so far it's been unobtainium. This was looking for the Race only. Guy at NAPA pulled out two books came up empty. Finally suggested I go to BDI here in town. I think they're called Bearings Direct or something.... called them.
He FINALLY helped clarify things (but couldn't help me)
He said the Race had three versions, L44610 (which is too small and what was sent to me), then "mine", L44613 and then I suppose a slightly larger size, L44615. (shrugs shoulders)
I finally emailed Timkin themselves to see what they have to say BUT, looks like I might have found what I need on Amazon now that I have all the right numbers.
Just hoping I can find them for less than $150. The one I pulled out looks fine. I dipped it into some cleaner but haven't really cleaned it up yet.... I have 5 others. I don't want to spend that much on bearings if I can find them for less..... but it seems I've at least found them so I've got a safety net.