I heard that jeep grand cherokee suspension can fit on a cherokee to give it a better ride, is this true? if so what years apply

 

well you can put the front coils and i think a few steering components on it to give it a 1.5inch lift or so..but that's about it unless you want to do some serious fab work to get the Cherokee converted to rear coil set up.

 

Only the front suspension will fit. If from a I6 ZJ grand it is exactly the same as what you have. If from a V8 ZJ grand the tie rod shaft is heavier and the springs MIGHT give you 1-1.5" lift.