The differences lie in the shape of the nose and mudguards and maybe some internal detail changes as well.
Does anybody out there have scale drawings of Ausf A and B???

Does anybody have internal shots and of the seating arrangemwnts???

If so or can provide any useful drawings/sketches, pix or helpful hints of your own please drop me a link or post to [email protected].
Your help as ever is always appreciated.
Cheers,

Scott.