Hi Fairmont,
I put tow hooks on my KK last week, and didn't notice the cylindrical metal thing you have behind the wheel liner. Maybe it's a CRD thing. We don't have CRD KK's in the states, so I've never seen this.
I have thicker metal stripes at the top of my radiator too, and mine's a gasser. Don't know what it is for, but I know that the radiator, air conditioning condenser, and transmission cooler are all part of the same unit. There is a small power steering cooler underneath the bumper.
I don't know if I created more questions than I answered, but good luck!

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2008 Liberty Sport 4x4 Automatic
Jeepin By Al 4" Lift Kit
BFG KO2’s 245/75R16
Full MOPAR skid plates
Rock Lizard Skink Super Sliders
AtTheHelm Front Recovery System & Roof RackM116A3 Trailer build thread: viewtopic.php?f=72&t=77997