The 32-34(?) starters have a threaded stud, for the battery cable, in the same
location as the copper pad, as an A. They are same size, bolt pattern, A&B 4banger.
The V/8 is longer and bolts up differently.
Whilst we're on starters... Is it true that the electric specification ( eg coils, thickness of wires etc) was the same for the 12volt starter as the Model A 6v one? ( and hence the Model A 6v starter can happily take 12v) Or this just an urban myth
32 B starter has 3 screw switch as Benson stated.33 B starter has threaded post on bottom side of starter. 33s had switch mounted on steering box with short cable to starter.I also believe there was 2 types of s-switch in 32.