For an 80 240d, what're the best tools to get this giant nut loose? It's holding up phase 2 of my project. It's on the smaller driveshaft just before the two driveshafts connect. Actually, it is the smaller of the 2 driveshafts.

http://s163.photobucket.com/albums/t304/phae1017/?action=view&current=DSCF0102.jpg