There's a bigger picture of your "fork". Granted it looks like yours is missing anything worthy. Its hard to say without looking at your form in front of a tech person as to whats in there.
It sounds like there should be oil in there still though i would think. Marzocchi's known for stuff like that though. Under filled oil levels, as well as no oil at all sometimes. I'd contact them and see how much dirt jumper 3 internals would be. They can also do it for you if you send it in.
Your overall bike choice is really up to you. Depending on what you were going for, it might be perfect outside of the fork issue. Personally its not a bike I would probably buy.