Well I don't know a lot about Toyota engines but I do know that if you told me in liters I would be able to help the biggest 4 cylinder from Toyota right now and the most refined is the 2.7 4 cylinder from the highlander and venza but the smaller 2.5 from the rav4 is very refined and i think would fit better in the car but if I could do it I would just try to make the 2.7 fit since it has 187 Hp and its really good on economy but the downside is it comes with a 6 speed. Just do research lol Hope this helped

if you want a list search wikipedia the list of Toyota engines I don't know the link

Hope this helped