I had the same problem when swapping in a KA(old one blew)
The only way I found was have like a 2-3 foot extension(or longer don't remember) for the 14mm socket and get at it from the under the car with a universal connector (
http://mikoma.com/alloy_artifacts/Photo ... ed.jpgjust in case you don't know what I'm talking about.)
Some tricks that make it easier:Have some one with small hands guide the socket on the bolt. It will help when you don't have to guess where the hell your socket is.If you have some friction tape wrap the universal in it, it will prevent it from flopping or what I call "locking" (when that stupid thing does the two right angles and you have to back off so you can turn it again) I used a metal bar over my breaker bar gave it a good whack with the rubber 2-lb dead-blow and that sucker was lose!
Well if you haven't gotten it out yet hopefully this will help!Oh and the hose that connects to that bracket held on by that bolt is just a breather hose, don't need to really worry about it just remember to put it back when you install the transmission.