 Complete the following phrase:  The final resurgence of the original Bugatti was the Type 251, completed in 1955. Designed by Gioacchino Colombo of Ferrari fame, it was powered by a new 2.5 L 2486 cc151 in3 straight-8. Uniquely, this engine was mounted transversely, behind the driver. For the first time in a Bugatti, an oversquare engine was used with a 76 mm bore and 68.5 mm stroke. A de Dion tube rear suspension was also a novelty for the company, though it was in vogue at the time. The Type 251 was entered in the 