Rover 3 1/2 Litre

The Rover P5B model is part of the P5 group of large saloon and coupé automobiles that were produced by Rover from 1958 until 1973. 

This final iteration of the P5 appeared in September 1967. Now powered by the 3,528cc Rover V8 engine also used in the 3500, the car was badged as the "3.5 Litre", and commonly known as the 3½ Litre. The final letter in the "P5B" model name came from Buick, the engine's originator.