40 ply spider gear conical thrust washers

[Noonan]

I am going through the rear end on the 40 plymouth.   I would like to source similar brass conical thrust washer for the spider gears and the larger flat thrust washers on the differential side gears.   

 

Has anyone successfully ordered these for other applications and found sizing to be proper ?  Or has anyone purchased material and spun these on the lathe ? 

 

I do know that the older Chevrolet 12 bolt guys now install steel thrust washers in place of their original brass thrust washers.  I see this as a downfall as steel will obviously not wear as brass would protecting the unobtainable steel differential parts. 

 

So far I've  found older Mini's use a similar brass conical thrust washer although the mini folks find that the shape and sizing of the aftermarket conical washer is not always perfect.  

 

I've also found the 1946 up willys dana axles used brass thrust washers as well in the differentials and it appears that most of the replacements are now steel although brass can be found for their dana rears. 

 

If anyone has any experience in this matter your input is greatly appreciated. 

[Noonan]

I tore down the differential assembly farther to get measurements, here are pics of the the spider gear conical thrust washers as well as the side gear thrust washers.   

 

The side gear thrust washers have already been replaced with fiber thrust washers by the look of things.