Cadillac was restyled and re-engineered for 1961. The Eldorado Biarritz convertible was technically reclassified as a subseries of the De Ville (Series 6300), a status it would keep through 1964. An Eldorado convertible would remain in the Cadillac line through 1966, but its differences from the rest of the line would be generally more modest. The new grille slanted back towards both the bumper and the hood lip, along the horizontal plan, and sat between dual headlamps. New forward slanting front pillars with non-wraparound windshield glass were seen. The Eldorado Biarritz featured front series designation scripts and a lower body "skeg" trimmed with a thin three quarter length spear molding running from behind the front wheel opening to the rear of the car. Standard equipment included power brakes, power steering, automatic transmission, dual back up lights, windshield washer, dual speed wipers, wheel discs, plain fender skirts, outside rearview mirror, vanity mirror, oil filter, power windows, 6-way power bench seat or bucket seats, power vent windows, whitewall tires, and remote control trunk lock. Rubberized front and rear coil springs replaced the trouble prone air suspension system. Four-barrel induction systems were now the sole power choice and dual exhaust were no longer available. With the Seville and Brougham gone sales fell to 1,450.
Source: Wikipedia, 2012