The 86 and 88 should share the same windows. I believe they *all* do.
If there's an exception, it will likely be the 84. (This is not based on any kind of logic, other than that the 84 doors are a bit different.)
Are the windows being scratched on the inside or outside?
There are felt/fiber pads on the inside that can collect grit, and cause scratches.
In my case (an 88) there was a piece of hardware (maybe a track?) that was contacting the glass as it moved up and down.
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Raydar
88 Formula IMSA Fasback.............................. 88 3.4 coupe................................................

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