Water pump differences? 68, 69, 70...??

64-69 cast iron, driver side hose.
70-up passenger side and aluminum. Longer snout.
64-67 timing cover has bolt on timing tab.
68-69 cast in marks
70-up, cast marks on the opposite side

OK ... old post, new question on this subject.
Any small block, drivers side water pumps with the 1 3/4 inlet?