Putting a Formula 1 engine in a road car is not an easy job - but it’s not impossible. We’ve seen a number of very decent examples of street-legal vehicles powered by engines made for the world’s fastest and most intense motorsport series. Mercedes-AMG even has a phenomenal factory effort, and if the whole idea inspires you, we have a very interesting proposal for you.

Someone in Bramham, United Kingdom, is selling a 3.5-litre V10 engine that Alfa Romeo built for the Ligier JS33 race car for the 1990 Formula 1 season. Codenamed V1035, the motor was never actually used for racing, though, as the agreement between Ligier and Alfa Romeo failed and the engine never made it to the starting grid. Nevertheless, it was designed and built to the exact specifications of Formula 1 at the time.

Gallery: Alfa Romeo V10 F1 engine for sale

It is believed that just about 15 units were assembled and Alfa used at least one of these engines to power the 154 Pro-Car (see the video below) set to enter an F1 supporting Pro-Car racing series. The Italians constructed an Alfa 164 saloon with the V10 engine under the bonnet but, unfortunately, the series was cancelled due to low interest from other manufacturers. The manufacturer made a demonstration run at the 1988 Monza Grand Prix where the 164 Pro-Car was actually faster than the F1 cars that day.

As far as this particular engine is concerned, it was recently inspected by Alfa Romeo technicians and it’s reportedly in perfect condition. More importantly, it’s been barely used based on the existence of the original cross-hatching in the cylinders. With 620 bhp (462 kilowatts) on tap, it has more than enough power for your weekend project car.

How much does it cost? You have just one day until the auction’s end and the current price is £4,850. We doubt the winning bid will be anything below £10,000 but even at that price, it’s well worth the money.