I think the 02 is the WJ version of the Grand, and in 05 maybe? they went to the WK body style. The current Grand is the WK2.
My in-laws just purchased an 04 with about the same miles on it for about $6K. It needed some brake work but was otherwise in good shape. It had the 4.0 I6.
Check to make sure the 4wd works as it should, and note the type. QuadraTrac 1 is just full time 4-hi with no low range, so I would avoid that. QuadraTrac 2 has 4-auto, N, and 4-Lo. There may be other transfer cases offered with the WJ as well.
Check that it has the tow package, or a trailer hitch. Might as well have that with the V8. Also it provides a bit of protection for the rear mounted gas tank.
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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