The exhaust is in a really bad shape. It has surface dirt and rust on it.
The battery has been leaking sometime in the past, a couple of decades ago, and it has left white marks on the engine mounts, exhaust, kick, battery tray and other things in it’s way.
The leak on the engine mounts and other parts.
Same surface dirt on the manifold.
The complete removed exhaust, I dont know if it is possible to clean out and reuse. There is no fracture or part missing, just dirt and rust.