Pwede naman. Just use the stock piping. But remember that the OEM filter housing has safeguards against water ingestion and if I remember right, the RVR uses a cyclone housing that traps dirt in a catch pan (instead of holding everything in the filter).

Why don't you try using replacement filters? On my Pajero, Isuzu Elf filters pretty much work. I just have to transfer the white 'propeller' from the OEM filter to the Isuzu one.