That water pump is for a 1954/55st and earlier 216/235.

Application List

I think it was established above, that you have a late-1955 (1955-2nd series) to 1957 235?
That engine uses a different style water pump (unless you plan to use a water-pump relocation plate/adapter) with that earlier water pump.

Tim
1954Advance-Design.com
1954 3106 Carryall Suburban
1954 3104 5-window pickup w/Hydra-Matic
The 216 and early 235 engines are not "splash oilers" -- this is a splash oiler.