jrsavoie wrote:
Dang, I wish I would get on that path. We haven't seen anything fun or reliaBle or economical about our Jeep yet.
The path to get you there for do-it-yourselfers:
Timing belt & water pump replacement
Install IN-TANK Lift pump (No. 1 rated mod)
Upgrade Boost Hoses to silicone hoses
Remove EGR, EGR Cooler, & FCV (Weeks elbow kit)
Replace ceramic glow plugs with steel ones
Install ProVent CCV filter
Remove CAT/choke point & OEM muffler and install free flowing muffler like Flowmaster
Install Secondary 2-3 micron fuel filter (to protect CP3)
Install better torque converter, i.e. Hemi, Suncoast, etc...& replace transmission front pump. Install Transgo kit
Reflash ECM with do-it-yourself tune for better performance and fuel milage
Upgrade coil springs, front & rear, and install good state of the art shocks & struts along with any other suspension parts that need replacing
Better tires if required..
Optional as time and money allows:
Install ARP Head studs
Replace rocker arms
Replace Exhaust Valves to prevent breakage (per geordi)
The above items will get you there! The PATH is not cheap nor is it without some work; but it is
DOABLE if you want the desired outcome!!!!!

ps; there may be some others that I may have missed, add if I did!!!!
_________________
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