Hi mate,
Here you are the V1 prototype of Ju-87 pics.I hope these are you have been looking for.All shots are form AJ-Press publication "Monografie Lotnicze" no.19 ISBN 83-86208-22-8.
In these photos you can see the first prototype of Ju-87 powered with Rolls-Royce Kestrel V engine 525/640KM.In the third picture you can see the same plane but with changed bigger radiator.The V1 version was the only Ju-87 with the double rudders.The V2,V3 and V4 had single ones.V2 and V3 had different fins and rudders in shape from V4 which had well-known J-87 tail section.The V4 version was the prototyp of A-1 series.