OK here is what I did, I looked at the bosses the thrust washers sat on and the one against the case was completely round so I mounted the thrust washer flipped around.
The boss on the other side was cut away for clearance so I mounted the thrust washer the proper way.
Then to make sure I checked the clearance of the rev gear.
As far As I can tell, the original did look like Eaglekeepers setup, but when you are the factory you can do things like that.
I think they found out there is no problem using the same design front and rear.
Besides, the durn reverse gear is larger than the thrust washer and you would have more problems with the gear if there was any clearance issues. The other end of the revers counter shaft is different so clearance there could be an issue.
The ones for the counter shaft were plastic and I used the original thrust washers in that position.
Check the clearance on your cluster also when mixing parts.
I was wondering about the marks. Were you suppose to make the marks on the parts before you pulled them apart?