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1975 911S Piston Orientation

Engine

Vehicle Information: Model: 911 S; Year: 1975; Body Type: Targa; Total Mileage: 115000;

I am rebuilding this engine but did not disassemble it and do not know which way the pistons and cylinders go. Does the dome on the top of the piston go next to the spark plug or 180 degrees from it?Do the larger fins in the cylinder (curved outside shape) go next to the inlet or exhaust? Also, do the 12 bolts that go through the crankcase enter from the left hand side of the case?In Bruce Anderson's book they show one way. In the Haynes manual they are opposite. Which is correct?

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