Bladejunkie

Thanks guys when you said clones I remembered that I had an old TT42 and its rear crankcase gasket is just what I needed.Now I have a couple other problems which way does the arrow on top of the piston point towards the exhaust port or towards the intake port?Also the flat sealing side of the head has a machined "dimple"on it does it have a certain way it goes?I took this engine apart about twenty years and one move ago so the old memory is kind of foggy.

Thanks again Jim.