Actually, since you are a 60 guy you can just pull a hub off your 60 and put it on the 80 to replace the driveplates. I ran my 91 with hubs (off my 83 BJ60) locked for fulltime and pulled the front driveshaft with the hubs unlocked for rwd for long trips. Because you have the old birfs no shims are necessary to run AISAN hubs.