Is the only difference between the 23-25 radiator apron and the 26-27 radiator apron, the slotted holes punched in the 26-27 apron for the trim strip, or is there a difference in dimensions?
Not all 26 and 27s had the trim holes in the Apron but the 26/27 had the bolt hole below the crank that goes into the Motor mount.
They are also a slightly different shape.
26-27 are slightly larger.