There is no way in theworld that I would buy an entire new kit.....
What kit do you currently have? I would look at purchasing either currie springs by themselves, or a set of four from BDS.
What do you use your jeep for? Do you have greasable shackles? Are your shocks in good shape?
If you do decide to go with some rubicon express spings, make sure they are the exteme duty springs....(too expensive)
91 YJ, 2.5L HO, SOA, 8.8 - spool, D30 - lunchbox, 4.88's, HD SYE, Tera Low, 35" MTRs