will the rear window trim moldings from a 1984 cutlass supreme four door fit on the same year of cutlass supreme only two door

If you're referring to the BACK window, they might but I doubt it. The 4-door was a totally different body style from the 2-door, and virtually no body parts were interchangeable. If you're talking about the REAR side windows, definitely not.

What other car window molding will fit the bottom back window if a 1978 Monte Carlo