Hi bmaveric.
Thank you so much for that link. I'm super happy for help.
Luckily, I have the head. It's just not in the image. All I'm missing is the valve cover and the exhaust.
I really want to thank everyone. You have no idea how helpful your advice has been. I've been looking for over a year and I was getting ready to start building parts.
I've looked everywhere, but I cant find parts for this tractor. It's a Yanmar 1600 a friend sold me, but he lost some parts to it. I would be grateful if anyone could direct me to someone who might sell them.