Your eyes are not playing tricks. That is a genuine Messerschmitt 109E restored to flying condition with a Daimler-Benz 601A engine at Wattisham. Hawker restorations are based nearby and took a break from rebuilding Hurricane's to work on this 109, which came from New Zealand and had originally been damaged in a crash landing on the French coast in 1940. Unfortunately, it was not staying in the UK and was rebuilt for a US buyer. The aircraft finished it's rebuild in secret at Wattisham, yet when the word was out it was sportingly placed on display at the 2005 3 Regiment open day. It was intended to test fly the aircraft at Wattisham but problems with the engine resulted in the aircraft being shipped to the US unflown.