Save your self the back story and just read the bold text... If your bored read on... So I have a real big issue. My car is fiberglass like most vettes... But unlike most vettes it is turbocharged and has fuel tanks quite close to the engine on either side. So I thought of course being unfamilliar with any metallurgy... 6 months ago that I would make a grade 2 titanium header and wrap it. ... knowing now that it would melt I of course looked to a solution... alloy 625 the viagra of turbo car exhaust. The nickle content makes it stiffer than a stallion on a mare under the hottest conditions an exhaust can provide but even better that content also helps it resist corrosive chemicals a car should never see at those temps. There are pitfalls. It can crack almost as easily as iron. The second issue is a 341 single bend is like 40$ and I have been told inconel is expensive... I dont know how expensive as no one has ever said but it must cost as much as silver ( Theres a joke there for people who cant get straight answers out of suppliers.) But I did some googleing for inconel headers to see how much they cost.... Turns out nascar's toyotas are using them and beating them up. I found a set for 400 $ What do you think about me cutting them up to make a turbo header for my lotus 910 engine? Oh the reason I cant use 304 is I have to wrap it so I don't burn my car to the ground The only things I can think of that would put up with that abuse are heavy nickle iron alloy and inconel.... Iron is heavy and I am not making a cast just for one part as I am not a foundry.