Ive seen similar, Its amazing watching skilled sheet metal man work on how they can create a shapped peace out of a flat bit of steel. Sadly its a dieing art. It always suprised me what Davie Potts at Sacriston use to do with the hotrods, similar and often far more complicated then the one linked too. Its no wonder the Americans kept going at him for years with offer after offer to go move over there and work for them and in the end due to the all inclusive offer he went.