Not sure if I'm in right spot. My niece loves my FJ60 but she wants a pick-up. She just needs a 2 WD but she wants best mileage she can get, college girl you know. So the question is which engine gives best mileage. I can do the rebuild if I need, have year to do it in, but I want to start with the right one. Any help would be appreciated. I thought of the 4 banger but was wondering if it could do the highway? 3.4 v6 is better then the 3.o V6 for mileage right? How about the 4L v6? I know the F2 but haven't dealt with these others so help me if you can. Thanks