Don’t forget that the transmission is different even if the 2.4 is already equipped with the 6spd...ANYTHING is possible, with enough time and money(patience doesn't hurt either). There are a lot of small parts and details involved in making such a swap(wiring harness,computer, hoses), I would NOT call this a relatively easy thing to do without a full informed manual for both available along with a well equipped shop to do it in.