Well i was in a garage with a garage pit, and i had help. But no it wasn't to difficult, just as long as you support the engine properly so it doesn't move when you take off the engine mount. The first time i had a jack underneath but the engine still shifted enough to make it a pita to get the engine mount back on, and with the engine further down the studs where almost impossible to get in some places, so i used some 2"4" and supported the engine from the top and it didn't move at all.
You can use an allen key on most of the studs, but on the front row i used two nuts thightened agains each other, and a little ratchet with and extender and a angle thingy(picture i don't know what it's called in english), it's a bit fiddly but it's doable.
Also a warning, it's probably not possible to get the oil pan on without scratching agaisnt the studs, so i had the sealent on the block, not the pan.
