Gears are all metal. Rtv for the cover. There are 2 seals for the small covers over the cam gears and 2 o-rings on the timing cover. If you order the parts off the bulletin you will get what you need. I would suggest also replacing the guide on the tensioner side of the main timing chain. They have been known to break. (Nylon breaks and slides off of metal backing). I do them in about 4 hours but I have done several. You should be able to finish it in a day without any problems.
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