I love my lift. OME "ZJ" lift coils are front OME ZJ coils...higher spring rate for the added weight I have on the front of my jeep and nets 3'' lift. My rear coils are 2.5'' liftt LJ coils...again for the certain coil rate I wanted for the heavy armor/tire and gear I carry in the back of the jeep...I also tow a small camping trailer so it assist with that too with no spring sag. The Rear LJ coils/rates I pick net me 2.75rear lift. I also have a 1.25'' JKS body lift to give me the clearance needed to run 33'' tires with decent articulation. To run 35's I would have to address my bumpstops again and run flat fenders in the front and remove the rear inner liner and probally have to clearance the pinch seams.
I will probally be on 37's shortly with the same lift but a LOT of different body parts. to do so.
If you are really curios about OME lifts and want to know about coil rates give Dirk a call at DPGoffroad.com....OME guru. He'll talk to you all day about what is best for the mods you have/will have and set you up with the right coils for your application.