The front subframe. Yes it could be replaced, I could get a new subframe. But the work would be costly and there is a lot more than needs doing. The poor economy was due to a leak in a fuel line, and the handbrake is seized on one side. There is other rust to the subframe at the rear, it goes deep and is making it structurally very weak. The other side, opposite is corroding but not as bad-it still has plenty of substance but won't last long.
There is rust on the body work too, and unfortunately we never went any further with the service, and so there may be other things. It would cost a lot to repair, I'd be better off with a newer car. This is the peril of living in a northern town, with heaps of snow, and associated salt for a few years in the car's younger days.