No, I'm saying that because two different rods were used, that two different crankshafts were used for balancing the motor.
The light duty con rods are marked #1619699
The heavy duty con rods are marked #3418645 or #2899495
That crank looks similar to a 340 cast type. But it may be for a 318 with the heavy rods. I don't know. After you choose the pistons, I'd bring a piston, rod, rings, piston pin, and rod bearing to a machine shop and have them check the crankshaft balance to see if it is close.
Measure the crank end play before putting the cap on. It should be the same after you torque the cap down.