@Tony Press My plan would be to make the hood in 4 parts. 1/ Top curved cover from exhaust pipe steel tube. 2/ Upper & lower rings from suitable steel solid blank. Machine on lathe to create the equivalent of the rolled rings. 3/ Exhaust pipe tube steel ring to join upper & lower rings. Weld with TIG welder and re-machine the joins on the lathe. @AussiePete Peter Magalotti is the owner of the business and a really nice guy on the phone. He probably would do other colours, but you'd have to pay more and would have to talk him into it. Ray