There are some warehouses that deal in obsolete Ford parts, one that comes to mind is Green Sales Co.
http://www.greensalescompany.com/
There are a few others, and as I remember them, I'll add them to this post.
You might also try searching part numbers on Parts Voice, I've found obsolete inventory many times through this service.
https://www.partsvoice.com/
Ford doesn't keep parts stock in the dealerships much past 10 model years, because only stupid-crazy people keep cars that long :laugh: , and I suspect that time frame is getting shorter all the time.
Synchro assemblies for old Ford front drive transaxles have always been hard to obtain items, if I'd stocked up on synchros for the Taurus SHO MTX-IV gearbag, I could have been selling them for 10X dealer retail. As it is, I have enough MTX-IV new spare parts for me. ;-)
For bearings, consider using Timken. The bearings in your transaxle will all have bearing interchange numbers on them, and if you can cross-reference them at your local Timken supplier, you're getting bearings that are as good as OEM. Sometimes Ford had bearing suppliers make something custom starting with a standard bearing, often these will have a non-standard I.D on the inner race, and unfortunately you're now stuck looking for the proper Ford part because no off-the-shelf bearing supplier is going to have this part. In the past 25 years, I've rebuilt countless MTX-IV's with Timken bearings, never had any bearing failures, and some of these boxes were modified and went in supercharged cars dropping 400HP to the tires.
You might also Google "MTX-75 rebuild kit", and you may find some suppliers with kits listed, but more often what you get is suppliers with a kit in their paper inventory, but they can't get the parts either. Sometimes you get lucky and stumble on a supplier with some actual physical parts on the shelf, so it doesn't hurt to search around and make inquiries.
So Francis, what kind of snow tires did you buy?
