The 96's had head gasket issues that should have all been fixed by now. the rest are all the same. I agree with the last poster. There is nothing on it to identify what year it is.
The 1995-96 head gasket issue was an incident that is irrelevant at this point. If a 1995-96 5VZ does fail, it is because of age and/or neglect. From what I understand, all 5VZ's are the same internally. I've seen cases of 99-00 5VZ's throwing rods but that is only a handful as well. There is really no way of picking the best. If it goes pop then I guess that is your luck.