1978 Cadillac Eldorado Biarritz Classic Coupe Final model year of the eighth-generation Eldorado; the last of the “big” Eldos One of only 2,000 Biarritz Classics made in 1978 One of only 25 Biarritz Classics made with sunroofs at American Sunroof Corporation 425 CID V-8 engine with front-wheel drive Turbo-Hydramatic 425 three-speed automatic transmission and 2.73…