Update: As mentioned above the two roller brackets look very similar, and the small steel rollers that fit into the tracks are the same size, but the big plastic rollers themselves are a different size that what comes on a 67. Very disappointing. So I still need one of the larger plastic rollers (1 and 1/16) to attempt to repair the bracket that I have. I ordered a set from RT Specialties on Dec 15 or so, but so far nothing has shown up, and numerous attempts at contacting them to find out the status of my purchase have been ignored. Maybe they sent them by horse and buggy. That is also disappointing, to say the least.
In the meantime, DetMatt has once again stepped to the table, and offered to sell me a couple of originals that he (always) seems to have! They are on their way and once in my hands, I can finally finish the drivers rear quarter window.
On a positive note, my passenger rear 1/4 glass was sometimes in need of a little assistance going up, and I thought, what the hell, in for a penny, in for a pound, and took the PW window motor out today. Took the motor out, and I see that someone else has been in there, as the motor has "74 Newport" written on the side. This is not the correct motor for my 67 as the mounting bolts have a different orientation.
I opened it up, and it is beat to rat ****. The plastic pucks were in little hunks. Went into my stash of motors, found the correct one that I had already rebuilt, swapped the mounting brackets and reinstalled it in the car. I also saw that I had 3 of the new pucks left, so cleaned up the incorrect motor, installed the new pucks, re greased everything and test ran it on the bench. Good as gold. Ran the new motor and the window up and down for a little test and everything is smooth as silk. Something positive for a Friday!