either buy a rearend off ebay with the disc set up.( I found mine for $200) way better than $2000 and rearend remove and install is a breeze. but if your going to do it from a kit. strip down all the way to the dust shield and take it off also... everything the axle gets a seal and the rest is pretty straight forward as far as caliper mounts n stuff. dont need brake line or anything unless the 1 you got is dry rotted only problem I ran into was the ebrake on passenger side worked up fine on driver side it changed a little bit just need a little longer 1 5 inches at the most nothing you cant do you can do the whole job in a day. good luck