I'll offer a different opinion to Trev. The forging numbers on the rod's can't face the camshaft, but they can face the (centre of) the crankshaft.
Now here's my take. On the power stroke the forces act on the rear face of the piston and on the big end bearing eye, both on the side to the rear of the engine. As such I would give those shells the most support in the eye of the rod, so would fit both rods with the shell locating tabs away from the major thrust, in other words tabs to the front. So the forging numbers on both rods face to the left, primary side, and the oil hole in the left hand rod faces the flywheel.
Now whether this makes the slightest difference in the grand scheme of things I don't know, so if you folks have done different it will still keep going until it stops.......All I know is from experience that's how the unmolested motors that I have seen were assembled.
Swarfy.