My question title pretty much covers it. This is a 2004 Lancer. The family car, not the sport version.
These pics might help:
Can this be repaired without replacing the whole unit? (That's an apparently cheap aftermarket piece and it's out of warranty.)
Yes, it can be repaired with an aftermarket unit. The manifold has visible welds on it already, so it can be welded to. Almost any aftermarket catalytic converter should be weldable.
To perform this repair, a shop will have to remove the exhaust manifold from the car. Almost any exhaust & muffler shop should be capable of performing this repair. However, they will need to include a provision for installing the oxygen sensor before the catalytic converter. Otherwise your car will not run correctly.
