It's front wheel drive and can handle snow chains no problem if you need them on. It's one of the safest cars for the winter until snow gets deep.
PS; Will you get me one?
Subarus are extremely difficult to work on anyway. I would never want one. Too many special tools needed. And look where...
What they mean is it's cheaper to replace it. It may have a bad crank, which can be replaced, it may have a bad piston sleeve, which may be replaceable at some shops, but it's cheaper to replace the engine.
You need to call auto wreckers. The 'chain' stores will have access to more engines...
I doubt you'll get a specific answer for this so ;
virtually all plastic cases are both screwed together and have guides that clip the two halves together. you may have to remove stickers or hidden items that may be hiding a screw, then use a jeweler's flathead screwdriver to pry the 2 apart...