Imagine you were looking at the RUSTIEST exhaust manifold you have ever seen. Imagine this truck was used for plowing and the salt has rusted the holy hell out of a ton of stuff. Today, we are talking about the exhaust manifolds which are so rust covered it reminds me of something out of the Dead Sea, all covered with salt. You can, if you look, see what could be bolt heads. So, what is going to happen if I try to change them? Right now, they are working fine.