Re: Possible Buick GSX?
There are not any known factory RPO GSX rag tops to have ever been built. You could however get a GS in Stage one guise as a rag top in 1970-72, which is technically the same car, sans the special paint colors and stripes(70-71).
In 1972 the GSX was a trim option package(not engine specific) available on any GS.
The Vin on a '72 will denote the engine option on the GS, 350, 455 or 455 Stage 1.
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