Ok forgot to add scimitar/scorpian when they still had petrol engines in them before they were fitted with restricters they were very fast Iv'e read a book were to tanks were racing up the motorway in the early 80's and the traffic police pulled them for doing 80mph this was in a book about the falklands as these engines were the same ones fitted to Jaguar cars .speed with a punch enough to knock out those sunday drivers