Ah Yes i see what you mean
It would be a lot of work to swap that front mount part vs just drilling it
And the newer blocks have that different water pump yes
I remember hearing about that
Around my area the older 235 with the high pump is very common and plentiful engine
Many trucks had been swapped out in the past for that 235 so even picking up a 1947-52 truck is likely to already have the 235 full pressure engine in it
I suppose that’s less common to find the right 235 for this swap in many parts but worth it for the simplicity and end results.
-s