I would point you in the direction of the wiki thread, but its not works yet. So heres a picture of an OEM LSD box />http://img.photobucket.com/albums/v229/TTJ/ep91lsdgbx.jpg Note the bit sticking out at the bottom to the right of the diff housing. Lsd boxes have a short driveshaft because of this. This is a non lsd box />http://img703.imageshack.us/img703/977/dscf3570.jpg Note there is no housing sticking out, just the driveshaft hence the longer driveshaft. (This is actually a corolla gearbox but its nearly identical)