Post a picture, I'm curious. My '59 uses the red plastic rollers, the blue one pictured above is not a 1-size fits all item, although repro parts houses either missed that distinction, or do not care what they sell you. Some older glass and parts shops may have them so you could try to match them up locally.
If yours have rivets, grind them off, but they still should be able to be slid off the track with them in place.