Swapping engines?

A few weeks ago, the U joint in the car failed while driving at 60 MPH. The drive shaft and whatever was still attached to it, whipped around destroying the center console and the floorboard below it as well as breaking the tail housing of the transmission, luckily the driveshaft was held up by the exhaust, so it didn't fall and gouge into the pavement at that speed. Since the motor was just gone through the notorious EJ Head gasket issues, among other reasons to save the motor, we decided it would be worth the time and effort to swap that motor into another car with a bad motor that's in better shape structurally. So, the question is this. Being a 2000 Legacy Outback with the 2.5L EJ motor, what other 2000+ Subaru vehicles will that motor directly swap into?