This 1957 Austin Healey 100-6, chassis BN4-O/50912, rolled out of the factory on 17th October 1957 and was first registered on 1 February 1958 in Morayshire, Scotland. It retains its original sales records and is accompanied by a British Motor Industry Heritage Trust certificate confirming its production details.

Originally fitted with a 2.6-litre inline-six engine, this example has been bored out and uprated with 3-litre pistons, resulting in increased torque and improved flexibility across the rev range. Additional mechanical upgrades include a Denis Welch camshaft, triple HD8 carburettors, high-flow twin SU air filters, and revised manifolds. The combination delivers a stronger, more responsive performance in a fast road specification, well suited to touring rallies and long-distance events.

Prepared to a road rally specification with an emphasis on mechanical reliability and usability, the car is eligible for recognised historic competitions including the Mille Miglia, Monte Carlo Rally, Modena Cento Ore, and the HRCR road rally series. FIVA papers are in process and can be completed for the new owner.

The exterior appearance has been carefully developed to evoke the look of a factory works car. It features works-style radiator ducting and wing vents as per the 1959 factory specification, along with a polished chrome grille that complements the clean, purposeful lines of the bodywork.

Chassis number BN4-O/50912 and body number 6531 match the heritage documentation, confirming the authenticity of this example. The interior has been configured to balance period presentation with practical details to support regular use.

This Austin-Healey represents an opportunity to acquire a well-documented car with clear provenance and thoughtfully executed mechanical improvements. The upgrades have been carried out to enhance performance and reliability without compromising the car’s original character.

It is registered in the UK as DSO 920 and is offered with its BMIHT certificate, original factory records, and documentation relating to the engine build and carburettor work.

The car is available for inspection by appointment and can be supplied with additional compliance papers to support historic competition entry.

Available exclusively for sale with Besley Heritage Ltd: £54,995.