You should be able to order a replacement engine at any auto parts shop.
If you are referring to the head gasket it can blow easily if the engine overheats. Unless there is a factory defect this is usually why head gaskets blow and mileage on the engine is not a factor.
No, Subaru's are the most over rated car on the planet. At any time over 60k the head gaskets will blow out. $1600. And at anytime over 60k the pistons will start slapping. That's the lovely tapping noise you will here every morning till the car fully warms up. And forget the cost of fixing that. Don't forget to carry some extra oil along, you'll need it. Junk
head gaskets blow and intake manifold gaskets break
A head gasket can blow on any thing.
Subaru sucks. why the hell would you want a Subaru, especially the cheapest Subaru cause they all blow.
ofcourse they do, they blow on any engine
Subaru's blow head gaskets at the drop of a dime, if your Subaru overheated its almost guaranteed that you will need to replace the head gaskets. I don't really know what you're asking because your question cuts off half way through the word "overnight". All I'm saying is be very wary if you have overheated your Subaru. I'm assuming you still have a coolant leak? And if so i would check the head gaskets.
You could blow the gaskets
Engine Overheating is the major cause.
Impossible to say. The battery may explode or it may not. You may destroy the battery or it may survive. Your main fuse may blow or it may not. You could have other electric damage or not.
Any kind of car can blow up. This does include a Subaru.