Jordan
Mid-Western Thunderer
That's what's really needed to determine the plate size - measurements! The prototype pictures are not completely 'side on' views, so it's difficult to judge, especially as the bodyside overhangs the battery boxes by some way.This is the picture I used For the positioning, looks good to me but I suppose with out the original plate to physically measure I can't be 100 percent certain.
Suffice to say that to me the SevernMill plate looks less "too big" than the Guilplates one looks more "too small", if that makes sense....

