The Liberty is a 2.8l Common Rail 4Cyl turbo. Not a V6. The V6 was in the Grand Cherokee.
I tell you these things from personal experience on an 06 CRD that belongs to my in-laws. I get to work on it.
I immediate upgrade to make is replacing the factory fuel filter,water separator,fuel heater unit with a Racor unit and adding a lift pump.
The factory piece has a plastic heater unit that has 2 very, very common failures:
1 The unit sucks air and causes poor idle ,hard starts and a louder engine as well as reduced MPG.
2 The connections on the inside of the heater where the element itself attaches are flawed and when combined with an air pocket from problem 1 can result in a melt down and even fire. Several Libertys have burned to the ground from this problem.
I purchased the Racor unit and with very little modification it works great. There is even a heater option but we don't need it this far south.
Now for the lift pump, it's easy. The Euro spec(Aussie incl.) 2.8 CRD Liberty and TJ have lift pump units. The US Libertys are already pre-wired for it from the Relay all the way back to the rear seat. Add the right pump, some fuel fittings and a little wire and it's in.
Make sure the Torque Converter recall has been performed and the front Ball Joint Recall as well.
Thats about all I can think of right now.Hope this helps
