So I am placing an order today for parts and was just curious on a couple things, I see there is variances in certain parts but no distinguishing between the engine they go on. I am assuming there is different variations of the CIBA engine.
-fan belt large and small
-water pump to engine block 45 and 90 degree angle
-crank main seal rope style and round solid rubber seal
Is there any way to distinguish which of these parts I should order? I did notice my engine does NOT have the oil fill-breather on driver side of the block if that helps. Also here is a couple pics showing casting/serial numbers on my engine.