If you are swaping AE92 drums out, and AE92 disks in, it is just a matter of bolting things in place. You may need to get new brake hoses tho. You will need not just the disk and caliper, but the hub carrier as well! The reason for this is the caliper bolts direct to the hub carrier unlike the AE82 which has a seperate backing plate that is changed for drum or disk.
Dont forget to get the hand brake cable for the disk setup!!!!
If you have all the parts ahead of time, you should be able to do the swap in an afternoon.