OEM type springs along with Bilstein shocks/struts from IDParts are ok. But if you want a little lift you can go with IronMan 4x4 America springs using either just their springs along with Bilstein shocks/struts or get the whole kit from IronMan with improved springs and their shocks/struts.
OEM Springs + Bilstein Shocks:>
https://www.idparts.com/springs-c-36_116.html +
https://www.idparts.com/shocks-struts-c-36_64.htmlor
Just Springs:>
https://ironman4x4america.com/suspensio ... &Year=2005or
Complete Kit:>
https://ironman4x4america.com/suspensio ... iberty-kj/
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Supporting Vendor and Moderator of LOST05 Jeep Liberty CRD Limited 
Ironman Springs/Bilstein/Shocks
Yeti StgIV Hot Tune
Week's BatteryTray
No FCV/EGR
Samcos/ProVent
SunCoast/Transgo
Carter Intank-pmp
2mic.Sec.Fuel Filter
Flowmaster/NO CAT
V6Airbox/noVH
GM11 Bld.fan/HDClutch
IronrockArms/wwdieselMount98 Dodge Cummins 24 Valve