Bellhousing bolts.
I've been able to get the tops with a box end wrench from the top, tapping with a mallet to break it loose. You'll have to crawl up in there on top of the engine to really get at it.
What I've done more often, especially on V6's, is use several extensions on a ratchet or breaker bar and just go up over the top of trans with the extensions. This may be a problem for you, since you don't want to lower the mission until you get the bell bolts. If you get the jack under the mission, pull the rear crossmember, lower the mission a little, it's almost a straight (but long) shot to the upper bell bolts.
Wheel well.
I wouldn't pull a wheel well unless it becomes obvious that you need to. I recall only needing to do this on one of my 4.0's, to deal with the Y-pipe, which yours doesn't have.