At the very outset "Pajero" to Mitsubishi is like "Land Cruiser" to Toyota, the reason I quote this similarity is because Pajero is the SUV platform for Mitsubishi & so have numerous variants both in Body as well as Drive Train. So if your looking at a difference between 2008 MY & its earlier variants you need to Identify which type of Pajero you are looking at for a comparison.

FYI Pajero also comes in the Famous Paris Dakar Rally winner sporting an "Evolution" badge.

Also not all Diesel variants of the Pajero carry the DID 3.2L plant, as the 2.8L 4M40 is also still available & infact is the currently offered version marketed in India.