The front shaft seals are a little recessed yes. You can get to the front diff filler with the driver's side wheel off, and ideally the plastic cover which sits over the junction box. It should be checked with the car level, and as usual fluid level is the bottom of the hole.
The torsen filler plug is also on the driver's side on the side of the casing where the torsen is. Can't remember if the exhaust is in the way of this one or not.
You can see them both in this pic:
