It was inevitable. The Brougham era was, while not gone yet, well on its way. 1990 was the last year you could get the 1977-style “New Chevrolet.” The aero-style 1991 Chevrolet Caprice was waiting in the wings. But before that happened, perhaps the Broughamiest Caprice of them all was still available. The Chevrolet Caprice Classic…