Since your Cutlass has a vinyl top it may have the needed pedestals. I know the '82-88 Montes used the same panel with or with out a vinyl top, they moded them for the trim. That moded panel may be what you have right now.
Do you have any pics of how you did yoursTurna, I used clips and screw in studs just like those to delete the vinyl top on my Regal. They worked great, I didn't even have to pull the rear glass. I have the 3 piece rear window trim. You can reuse the trunk filler panel, I did. I just cut the studs off and welded up any holes that were drilled.
Do you have any pics of how you did yours
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