Today I'll be leaving work with the old compressor tank and head (no motor, still works so they're keeping it). I will be asking my yard what I have to do to the tank to get cast iron price and the head is going to be a project for me and my kids to play around with this weekend. It already has most of the oil drained from laying on it's side for quite a while. Any tips or advice on what to do with it? Tank is still good but the head is done, that's why we got a new one.