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panel filter replaces the standard air filter but keeping the factory airbox, whereas normal filter (by which i assume you mean induction kit) replaces the airbox but (please correct me if im wrong) you will actually lose power with an induction kit.
If you want to, it seems pointless though as a filter like the OP will make no noticeable difference on it's own, will make it worse if anything due to heatsoak. A Panel filter is also pointless IMO on a 65bhp diesel van. Remap if you can.
All the fan would do in that pic is add weight FYI.