My favorite lift kit for the Jeep Cherokee is part number ZX071866W from JC Whitney. This is a three inch lift that includes an extra leaf for the rear spring pack and a block. It also comes with new front springs.
Click the link below and search for ZX071866W. The price is currently $120 but it varies from time to time.
I have this kit installed on my 88 XJ with 33″ tires. I had to cut the fenders a bit to fit 33’s. Jenny has the same kit on her Jeep with 31″ tires.
It is amazing that this kit comes with new front springs and an extra leaf for the rear andf blocks for the rear for just $120. Most lift springs alone cost more than this.