So I've searched and read through different threads on repairing cast iron exhaust manifolds. I just got the matching ds hp exhaust manifold. The most anterior (front) bolt ear is cracked ever so slightly on the outer surface. I've seen people say they have had good luck "braze" fixing it also others say it can be welded but it's extremely difficult. Even saw one person say JB weld lol. Is there a clear cut best way to fix it? My uncle owns a very large welding company, but he says I'm the second person in 35yrs to ask him about cast iron welding and that it is very very difficult but he will ask around. I also was thinking of cleaning up the ps manifold, it has a little pitting and rust on it. Can this be done at home or is sand blasting the best way to do it? I know some of you own giant shops and can sand blast at home but that's not an option for me. Pics for clicks . Edit I'm aware of the 3 different manifolds in pictures. Car came with 68hp exhaust manifold and 72hp manifold on it, and I got the matching 68hp just yesterday. I'll try and clean all 3 up in this project.