The one on the left appears to be a 32 V8 BUT the upper inlets have been reworked to point rearward for a later engine AND the lower outlets have been
replaced with "risers" to align with higher waterpump inlets, AND the filler neck has been filled and replaced with an under-hood filler.
I say it is a V8 because the lower tank does not taper to the right as does a
Model B 4cyl radiator, and it does not appear to be an "A" radiator, although I claim no "A" expertise...