Technically it can be any where.The oil pump shaft sets the dist. and the dist can be set in at two spots 180 degrees around.But you want it to be on the driver side pointing near the center of the exhaust manifold.as stated above.
point the slot at the front driver intake bolt if restabbing while pistons at tdc. Scratch everything I said if its not an la motor. What do you have slant la or b, rb