yep , head gasket , they are famous for it , not a big deal to do . just make sure head is not cracked and you do the timing belt right first time. I haven't done one myself but my cuz and family had 4 or 5 of them and everyone had the gasket go . I would bring engine up on TDC before pulling the head so you don't have to mess with the dist after . I think you align the cam with a pin or something in through a hole in the cam sprocket. I'm sure somebody will chime in and give you straight facts. I think it can be done in a few hrs .