You probably missed a great opportunity with KNG SNKE parting out a salvaged car ( he had hinge covers listed at first); but, PM him anyway, in case they aren't sold.
If no luck there, then one go-to source for used Viper parts is
Don Scharf Auto
I agree that the gill covers are tacky; but, I don't like wings on street cars just there for show, so, to each his own.