Awesome! I love when people buy cars simply because of nostalgia. It's the reason I'm going to snap up a 1987-1991 Camry AllTrac 4WD if I ever find one.
Also, re: your comment about it being the most expensive car Cadillac sold that year... wouldn't the Sedan DeVille (Concours, Brougham, Fleetwood, etc.) have been pricier than the Seville?