Well have found a complete standard exhaust system for my F2. The front down pipes are a little worn so going to have a go at making some out of Stainless pipe. My friend has a mandrel bender so half way there. Will let you know the results. Also now winter will soon be here will let you know about what stainless steel parts I am making the list is getting longer each day. Only last night I made a new set of exhaust fixing cones in stainless tube with the flare on the end.